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Call me crazy, but aren't radio waves technically light as well? Thus it's hard to say that LIDAR uses light rather than radio waves... -- Dante Alighieri 09:19 28 Jun 2003 (UTC)
Is LADAR the correct term here - or should it be LIDAR? Perhaps with a sub heading for Ladar.
Lidar is linked to Ladar in Wikipedia. I think it should be the other way around, or there should be two entries. Also should these terms be capitalised? They are spelt as Ladar and Lidar in many internet entries. Any thoughts? kiwiinapanic 09:59, 17 Dec 2003 (UTC)
Page moved from LADAR to LIDAR. kiwiinapanic 11:37, 31 Dec 2003 (UTC)
Can anyone tell me what some of the pros & cons are of using a polygon mirror [1]? — Preceding unsigned comment added by 209.247.234.99 ( talk) 15:13, 13 April 2004 (UTC)
LADAR stands for LASER Detection and Ranging. LASER stands for Light Amplification by Stimulated Emission of Radiation. If you string the whole thing together, you get "Light Amplification by Stimulated Emission of Radiation, Detection, and Ranging." How do you emit detection and ranging? Same thing goes for LIDAR, except it emits imaging too. — Daniel 01:34, 21 December 2005 (UTC)
The style on this article is horrible [2]. It's poorly formatted and many parts sound very informal. I'm gonna mark it for cleanup. 69.161.13.68 22:36, 13 March 2006 (UTC)
The following article ( abstract) by the National Institute of Standards and Technology would provide some good background information to help with a cleanup of this section.
—Preceding unsigned comment added by Flyingpolarbear ( talk • contribs) 19:33, 17 March 2006 (UTC)
600-800 nm lasers are most common for non-scientific applications. They are inexpensive and can be found with sufficient power but they are not eye-safe. Eye-safety is often a requirement for military applications. 1550 nm lasers are eye-safe but not common and are difficult to get with good power output. Laser settings include the laser repetition rate (which controls the data collection speed) and pulse length (which sets the range resolution).
1550s aren't all that rare nowadays. I'm not really sure I buy the rep rate comment either. Maybe that's true for power, but if you needed a lot of power you'd be using a YAG anyway - right? - not a 600-800 diode. 600-800 isn't a very good range limit spec either if this is supposed to imply "conventional III-V edge-emitting diode" - 904 nm LIDARs are common as dirt. Is this section from an outdated source perhaps? Tarchon ( talk) 21:25, 10 April 2006 (UTC)
All kinds of systems and applications use the term LIDAR. Not all LIDARs are based on lasers or pulses. And the distance measurement is only one of the measured parameters. I suggest the following more general introduction.
LIDAR (LIght Detection and Ranging or Laser Imaging Detection and Ranging) is a technology for remote sensing. In many ways it is similar to radar, but based on light instead of radio waves.
LIDAR technology has applications in several fields. Among other it is used for traffic surveillance, air pollution studies, remote spectroscopy and for precise mapping and distance measurements.
Other common terminology for LIDAR is LADAR or laser radar.
I am also working on a short general principle section. Which could be followed by the following applications section suggestion:
The primary difference between LIDAR and radar is that LIDAR uses much shorter wavelengths of the electromagnetic spectrum, typically in the ultraviolet, visible, or near infrared.
As the intensity of electromagnetic scattering from a particle depends on the wavelength light is sensitive to small particles like aerosols. LIDAR is therefore used to remotely measure airborne pollution, cloud formation and even clear atmosphere wind. LIDAR systems taking advantage of this phenomenon are DIAL and DWL.
An object needs to produce a dielectric discontinuity in order to reflect the transmitted wave. At radar ( microwave or radio) frequencies a metallic object produces a significant reflection. However non-metallic objects, such as rain and rocks produce weaker reflections and some materials may produce no detectable reflection at all, meaning some objects or features are effectively invisible at radar frequencies.
A light- photon also has a more energetic energy quantum then a radio-wave photon and will interact with electrons and vibrational states of atoms and molecules. LIDAR is therefore used for remote spectroscopy of trace gases in the atmosphere, for example ozone, methane etc. For the same reasons it is used for measurements of chlorophyll for biomass studies. RAMAN LIDAR and DIAL.
The shorter wavelength also implies that very narrow beams can be produced, typically with a divergence of less than a milliradian. This characteristic allows distance and feature mapping with very high resolution compared with radar and that target clutter can be avoided. LIDAR are therefore used for missile guidance and traffic surveillance.
and finally a more detailed principle description of the different subsections.
— Preceding
unsigned comment added by
130.225.79.64 (
talk)
14:18, 12 April 2006 (UTC)
Does anybody know if lidar and radar were fixed on the same target from roughly the same place if they could mess with each other? — Preceding unsigned comment added by 69.156.43.137 ( talk) 04:53, 2 June 2006
I'm somewhat sceptical of the picture of the laser...if the laser interacted with air particles, it would encounter too much interference and would never reach the intended target, so I believe someone has skilfully photoshopped the picture with a lightsabre-like beam – anyone? — Preceding unsigned comment added by 195.172.14.80 ( talk) 09:14, 26 June 2006 (UTC)
{{
cleanup}}
tagThe article [5] seems well organized and well written, although a bit technically confusing with all the terms you use. You need to add a reference section for citations sourcing your information. KarenAnn ( talk • contribs) 15:21, 6 July 2006 (UTC)
I think there should be a section listing the different techniques for measuring each parameter such as aerosol type and air temperature. —Preceding unsigned comment added by Cap.fwiffo ( talk • contribs) 21:18, 20 August 2006 (UTC)
LIDAR may be used in science fiction as an alternative to RADAR. I'd add a section but I'm not sure it meets notability requirements, as the only thing I know of for sure that uses it is Space: Above and Beyond. 69.81.123.154 ( talk) 18:26, 24 December 2006 (UTC)
Hey y'all: I've reverted [6] a previous removal of a KQED-TV ( PBS) science story from LIDAR# External links. I didn't get a reply from User:JuJube after requesting clarification for removal. Craigrosa ( talk) 18:13, 16 May 2007 (UTC)
How about a link or mention somewhere of some of the leading commercial contenders eg:
I see there is already a link [7] from the Zephir disambiguation page to this lidar article. Other sources of information on these products at:
Davagh ( talk) 16:00, 27 February 2009 (UTC)
This is the only Wikipedia page that has ever slowed down my browser. Is it because of the animated pictures? Running Mac OS X and Firefox. — Preceding unsigned comment added by 76.17.212.193 ( talk) 00:51, 21 September 2009 (UTC)
The article on light is ambiguous on this discussion ("In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not" [8]). It would seem most clear to simply edit the lede to remove "which is light that is not in the visible spectrum..." (the clause [9] is unnecessary and reads somewhat awkwardly anyway, I think). A reasonable alternative would be "which is electromagnetic radiation not in the visible spectrum," I think. Not that this is a huge issue, but the wording is odd enough to have caused me to click the discussion tab. ;) 131.107.0.102 ( Microsoft web proxy) 19:03, 10 November 2009 (UTC)
The sentence about calling "laser radar...misleading" [10] doesn't feel right. My logic is that LIDAR would in fact be a type of radar. Many of what we call radars utilize the microwave bit of the spectrum. Radar grew beyond its original acronym some time ago. Do even shorter wavelengths make a radar not? ~ Theparadigmshifter ( talk) 06:45, 23 January 2010 (UTC)
Yeah, if you can show me a "light radio" then MAYBE you could say "laser radar" is not misleading. Ultimately, this term is inaccurate, un-scientific and misleading. See the similar discussion above [12] or just learn the EM spectrum. 132.38.190.22 ( talk) 14:25, 13 July 2010 (UTC)
A couple of days ago (mid May 2010), several publications were made about how NASA has used LIDAR to survey Caracol, a large Maya city. Could be interesting to mention this and provide suitable links to more information. TobiF ( talk) 11:33, 18 May 2010 (UTC)
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Chaosdruid ( talk) 11:12, 24 March 2012 (UTC)
I noted a credit for "on set Lidar scanner" in the recent movie Total Recall. I gather moviemakers are now using LIDAR to scan objects that are going to be represented in CGI? There should be a section on this in the article. 38.111.35.2 ( talk) 16:20, 14 August 2012 (UTC)
I worked in the business until recently. Over the past few months my friends have seen Lidar used in location and sets scanning for the art department or for animation/cgi. CGI set extensions have been going on for a while, so it's been useful in helping to cut down labour in that regard. Set it up and get a lovely 3d model in an afternoon? Absolutely someone should write something about this. — Preceding unsigned comment added by 70.53.64.27 ( talk) 22:53, 13 May 2014 (UTC)
Most publications use "lidar" not "LIDAR". To be honest, this is a more logical spelling, since lidar is not an acronym, see the revisions at LIDAR#Derivation and spelling of LIDAR, which provides a history of the usage. I think we should acknowledge this, and rename the article Lidar. Thoughts? Edgar Vekilnik, Jr. ( talk) 02:49, 4 May 2013 (UTC)
The result of the proposal was moved. -- BDD ( talk) 18:12, 15 May 2013 (UTC)
LIDAR → Lidar – 1. Lidar is not an acronym, it is a portmanteau of "light" and "radar", as it is stated in the first published reference (James Ring, "The Laser in Astronomy." p. 672-3, New Scientist Jun 20, 1963). 2. Even if you believe it is an acronym, it should not be all caps, since it follows the pattern of "laser" and "radar". 3. Most publications use "lidar", not "LIDAR" (see Google Books: [ [13]]}. Edgar Vekilnik, Jr. ( talk) 13:02, 8 May 2013 (UTC)
BDD ( talk) 18:12, 15 May 2013 (UTC)
When this article was moved from LADAR to LIDAR to Lidar all mention of LADAR was deleted. However, at least the USAF continues to use the term LADAR. The redirect left behind does not explain that LADAR is still in use, even if it is not the more common name. I believe the etymology section needs to add a mention of this alternative name. -- Lineagegeek ( talk) 21:35, 17 August 2013 (UTC)
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Is there a good source that debunks this? It doesn't seem to want to die otherwise. Andy Dingley ( talk) 10:55, 4 October 2015 (UTC)
I would like to add a section on lidar use in forestry. Any thoughts?
Here is a source I would use for reference:
Loganbarrett28 ( talk) 04:36, 14 March 2017 (UTC)Logan Barrett
Putting this on the talk page for future editors. I just went through and changed all (hopefully) the different spellings of lidar, for consistency. I used the NY Times format of lidar, non-capitalized in any way, unless it's the start of a sentence. If other groups use LiDAR or LIDAR I left those references alone. Timtempleton ( talk) 23:00, 13 April 2017 (UTC)
The 3 example papers for "Approaches of processing lidar data" are absolute rubbish. These are papers in third tier conferences and workshops that have absolutely no impact (23/4/10 citations). The summaries have very low quality and plenty of obvious mistakes. As an example "using Fast R-CNN[53] as this method doesn't need training" is completely false! I suggest to remove all of them or have at most one sentence per method. — Preceding unsigned comment added by 31.10.144.135 ( talk) 12:41, 17 November 2017 (UTC)
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The images at the top of the article are really messy and it makes you scroll a good amount before getting to the article. Should I add a gallery section? Lord David, Duke of Glencoe ( talk) 21:08, 6 February 2018 (UTC)
The picture of the "Uber self-driving car" has someone at the wheel. Are we sure this is a self-driving car? Morfusmax ( talk) 16:22, 9 February 2018 (UTC)
References
The first sentence says that lidar is "a surveying method that measures distance to a target by illuminating the target with pulsed laser light and measuring the reflected pulses with a sensor". This scope is too narrow on at least three accounts:
I suggest replacing the first sentence with something like, "Lidar is a type of sensor which obtains information by bouncing light off a target. Such information may include distance to target, direction of the target, reflectance, speed, or atmospheric conditions."
I also think that the article itself needs a huge amount of cleanup. I can probably look into reorganizing a lot of it when I have the time, although I'm working for a lidar manufacturer so it is probably best that someone else does it. For a good technical overview, I recommend the SPIE Field Guide to Lidar. dllu (t, c) 10:18, 9 June 2018 (UTC)
I'd enjoy if the history section included a timeline of when each application went into common service, or at least if the application sections included those years. If others agree this is a good idea, I can go ahead with a rough pass, with citations of course. Adamw ( talk) 07:08, 1 October 2018 (UTC)
No reference given for the claim that Radar is a pronunciation error of raider. Sounds very suspicions. Given the article isn't even about Radar, might be best to remove? — Preceding unsigned comment added by ChrisH256 ( talk • contribs) 19:54, 23 April 2019 (UTC)
I wonder if others might have more information to create a section about Lidar safety conserns. BBC made an article a while back about a photo-camera being ruined by a car with lidar ( https://www.bbc.com/news/technology-46875947), so I wonder if there isn't more. 62.238.252.34 ( talk) 09:37, 20 October 2020 (UTC)
I’d like more info on how iPhone 12 Pro Max does Lidar. DBGustavson ( talk) 20:27, 10 July 2021 (UTC)
Hello! This is to let editors know that File:Ouster OS1-64 lidar point cloud of intersection of Folsom and Dore St, San Francisco.png, a featured picture used in this article, has been selected as the English Wikipedia's picture of the day (POTD) for January 27, 2022. A preview of the POTD is displayed below and can be edited at Template:POTD/2022-01-27. For the greater benefit of readers, any potential improvements or maintenance that could benefit the quality of this article should be done before its scheduled appearance on the Main Page. If you have any concerns, please place a message at Wikipedia talk:Picture of the day. Thank you! Cwmhiraeth ( talk) 11:25, 22 January 2022 (UTC)
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Lidar is a method for determining ranges by targeting an object with a laser and measuring the time taken by the reflected light to return to the receiver. Lidar can also be used to make digital 3-D representations of areas on the Earth's surface and ocean floor, due to differences in laser return times, and by varying laser wavelengths. It has terrestrial, airborne, and mobile applications. This image shows an orthographic projection of a registered point cloud depicting the intersection of Folsom Street and Dore Street in San Francisco, California. The point cloud was captured over 18 seconds and registered in real time using an Ouster OS1 lidar unit mounted on a moving car. The points are coloured by a function based on raw lidar intensity multiplied by range, with orange signifying brighter regions and dark blue for darker regions. Lidar is a popular sensor for self-driving cars. Image credit: Daniel L. Lu
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LIDAR in this sense is a related means of measuring wind speed at a distance, using much the same technology. Andrewa ( talk) 17:12, 1 June 2022 (UTC)
There is an older source from 2018 saying that flash LiDAR cannot be done using silicon photonics in an eye-safe range and requires Gallium-Arsenide photonics. Is this still true? It seems like SiLc’s product might make this assumption false by proof by contradiction. I also thought using OPA made silicon photonics viable for flash LiDAR.
I am not an expert, but would appreciate any experts chipping in to re-examine this source for accuracy. 2603:8080:6001:9C81:0:0:0:1008 ( talk) 14:46, 18 February 2023 (UTC)
LIDAR was recently incorporated with 3D Printing in Bambu Lab's X1 Carbon. Would this be a worthwhile addition to the article? Trojari ( talk) 15:19, 20 March 2023 (UTC)
"Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "http://localhost:6011/en.wikipedia.org/v1/":): {\displaystyle d=\frac{c\cdot t}{2}}" Zhamelax ( talk) 08:49, 27 September 2023 (UTC)
How do i add a reference to a Wikipedia article on Edward Hutchinson Synge, who did theoretical work on LIDAR in 1930? Wikiijohn ( talk) 03:38, 25 January 2024 (UTC)
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Call me crazy, but aren't radio waves technically light as well? Thus it's hard to say that LIDAR uses light rather than radio waves... -- Dante Alighieri 09:19 28 Jun 2003 (UTC)
Is LADAR the correct term here - or should it be LIDAR? Perhaps with a sub heading for Ladar.
Lidar is linked to Ladar in Wikipedia. I think it should be the other way around, or there should be two entries. Also should these terms be capitalised? They are spelt as Ladar and Lidar in many internet entries. Any thoughts? kiwiinapanic 09:59, 17 Dec 2003 (UTC)
Page moved from LADAR to LIDAR. kiwiinapanic 11:37, 31 Dec 2003 (UTC)
Can anyone tell me what some of the pros & cons are of using a polygon mirror [1]? — Preceding unsigned comment added by 209.247.234.99 ( talk) 15:13, 13 April 2004 (UTC)
LADAR stands for LASER Detection and Ranging. LASER stands for Light Amplification by Stimulated Emission of Radiation. If you string the whole thing together, you get "Light Amplification by Stimulated Emission of Radiation, Detection, and Ranging." How do you emit detection and ranging? Same thing goes for LIDAR, except it emits imaging too. — Daniel 01:34, 21 December 2005 (UTC)
The style on this article is horrible [2]. It's poorly formatted and many parts sound very informal. I'm gonna mark it for cleanup. 69.161.13.68 22:36, 13 March 2006 (UTC)
The following article ( abstract) by the National Institute of Standards and Technology would provide some good background information to help with a cleanup of this section.
—Preceding unsigned comment added by Flyingpolarbear ( talk • contribs) 19:33, 17 March 2006 (UTC)
600-800 nm lasers are most common for non-scientific applications. They are inexpensive and can be found with sufficient power but they are not eye-safe. Eye-safety is often a requirement for military applications. 1550 nm lasers are eye-safe but not common and are difficult to get with good power output. Laser settings include the laser repetition rate (which controls the data collection speed) and pulse length (which sets the range resolution).
1550s aren't all that rare nowadays. I'm not really sure I buy the rep rate comment either. Maybe that's true for power, but if you needed a lot of power you'd be using a YAG anyway - right? - not a 600-800 diode. 600-800 isn't a very good range limit spec either if this is supposed to imply "conventional III-V edge-emitting diode" - 904 nm LIDARs are common as dirt. Is this section from an outdated source perhaps? Tarchon ( talk) 21:25, 10 April 2006 (UTC)
All kinds of systems and applications use the term LIDAR. Not all LIDARs are based on lasers or pulses. And the distance measurement is only one of the measured parameters. I suggest the following more general introduction.
LIDAR (LIght Detection and Ranging or Laser Imaging Detection and Ranging) is a technology for remote sensing. In many ways it is similar to radar, but based on light instead of radio waves.
LIDAR technology has applications in several fields. Among other it is used for traffic surveillance, air pollution studies, remote spectroscopy and for precise mapping and distance measurements.
Other common terminology for LIDAR is LADAR or laser radar.
I am also working on a short general principle section. Which could be followed by the following applications section suggestion:
The primary difference between LIDAR and radar is that LIDAR uses much shorter wavelengths of the electromagnetic spectrum, typically in the ultraviolet, visible, or near infrared.
As the intensity of electromagnetic scattering from a particle depends on the wavelength light is sensitive to small particles like aerosols. LIDAR is therefore used to remotely measure airborne pollution, cloud formation and even clear atmosphere wind. LIDAR systems taking advantage of this phenomenon are DIAL and DWL.
An object needs to produce a dielectric discontinuity in order to reflect the transmitted wave. At radar ( microwave or radio) frequencies a metallic object produces a significant reflection. However non-metallic objects, such as rain and rocks produce weaker reflections and some materials may produce no detectable reflection at all, meaning some objects or features are effectively invisible at radar frequencies.
A light- photon also has a more energetic energy quantum then a radio-wave photon and will interact with electrons and vibrational states of atoms and molecules. LIDAR is therefore used for remote spectroscopy of trace gases in the atmosphere, for example ozone, methane etc. For the same reasons it is used for measurements of chlorophyll for biomass studies. RAMAN LIDAR and DIAL.
The shorter wavelength also implies that very narrow beams can be produced, typically with a divergence of less than a milliradian. This characteristic allows distance and feature mapping with very high resolution compared with radar and that target clutter can be avoided. LIDAR are therefore used for missile guidance and traffic surveillance.
and finally a more detailed principle description of the different subsections.
— Preceding
unsigned comment added by
130.225.79.64 (
talk)
14:18, 12 April 2006 (UTC)
Does anybody know if lidar and radar were fixed on the same target from roughly the same place if they could mess with each other? — Preceding unsigned comment added by 69.156.43.137 ( talk) 04:53, 2 June 2006
I'm somewhat sceptical of the picture of the laser...if the laser interacted with air particles, it would encounter too much interference and would never reach the intended target, so I believe someone has skilfully photoshopped the picture with a lightsabre-like beam – anyone? — Preceding unsigned comment added by 195.172.14.80 ( talk) 09:14, 26 June 2006 (UTC)
{{
cleanup}}
tagThe article [5] seems well organized and well written, although a bit technically confusing with all the terms you use. You need to add a reference section for citations sourcing your information. KarenAnn ( talk • contribs) 15:21, 6 July 2006 (UTC)
I think there should be a section listing the different techniques for measuring each parameter such as aerosol type and air temperature. —Preceding unsigned comment added by Cap.fwiffo ( talk • contribs) 21:18, 20 August 2006 (UTC)
LIDAR may be used in science fiction as an alternative to RADAR. I'd add a section but I'm not sure it meets notability requirements, as the only thing I know of for sure that uses it is Space: Above and Beyond. 69.81.123.154 ( talk) 18:26, 24 December 2006 (UTC)
Hey y'all: I've reverted [6] a previous removal of a KQED-TV ( PBS) science story from LIDAR# External links. I didn't get a reply from User:JuJube after requesting clarification for removal. Craigrosa ( talk) 18:13, 16 May 2007 (UTC)
How about a link or mention somewhere of some of the leading commercial contenders eg:
I see there is already a link [7] from the Zephir disambiguation page to this lidar article. Other sources of information on these products at:
Davagh ( talk) 16:00, 27 February 2009 (UTC)
This is the only Wikipedia page that has ever slowed down my browser. Is it because of the animated pictures? Running Mac OS X and Firefox. — Preceding unsigned comment added by 76.17.212.193 ( talk) 00:51, 21 September 2009 (UTC)
The article on light is ambiguous on this discussion ("In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not" [8]). It would seem most clear to simply edit the lede to remove "which is light that is not in the visible spectrum..." (the clause [9] is unnecessary and reads somewhat awkwardly anyway, I think). A reasonable alternative would be "which is electromagnetic radiation not in the visible spectrum," I think. Not that this is a huge issue, but the wording is odd enough to have caused me to click the discussion tab. ;) 131.107.0.102 ( Microsoft web proxy) 19:03, 10 November 2009 (UTC)
The sentence about calling "laser radar...misleading" [10] doesn't feel right. My logic is that LIDAR would in fact be a type of radar. Many of what we call radars utilize the microwave bit of the spectrum. Radar grew beyond its original acronym some time ago. Do even shorter wavelengths make a radar not? ~ Theparadigmshifter ( talk) 06:45, 23 January 2010 (UTC)
Yeah, if you can show me a "light radio" then MAYBE you could say "laser radar" is not misleading. Ultimately, this term is inaccurate, un-scientific and misleading. See the similar discussion above [12] or just learn the EM spectrum. 132.38.190.22 ( talk) 14:25, 13 July 2010 (UTC)
A couple of days ago (mid May 2010), several publications were made about how NASA has used LIDAR to survey Caracol, a large Maya city. Could be interesting to mention this and provide suitable links to more information. TobiF ( talk) 11:33, 18 May 2010 (UTC)
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Chaosdruid ( talk) 11:12, 24 March 2012 (UTC)
I noted a credit for "on set Lidar scanner" in the recent movie Total Recall. I gather moviemakers are now using LIDAR to scan objects that are going to be represented in CGI? There should be a section on this in the article. 38.111.35.2 ( talk) 16:20, 14 August 2012 (UTC)
I worked in the business until recently. Over the past few months my friends have seen Lidar used in location and sets scanning for the art department or for animation/cgi. CGI set extensions have been going on for a while, so it's been useful in helping to cut down labour in that regard. Set it up and get a lovely 3d model in an afternoon? Absolutely someone should write something about this. — Preceding unsigned comment added by 70.53.64.27 ( talk) 22:53, 13 May 2014 (UTC)
Most publications use "lidar" not "LIDAR". To be honest, this is a more logical spelling, since lidar is not an acronym, see the revisions at LIDAR#Derivation and spelling of LIDAR, which provides a history of the usage. I think we should acknowledge this, and rename the article Lidar. Thoughts? Edgar Vekilnik, Jr. ( talk) 02:49, 4 May 2013 (UTC)
The result of the proposal was moved. -- BDD ( talk) 18:12, 15 May 2013 (UTC)
LIDAR → Lidar – 1. Lidar is not an acronym, it is a portmanteau of "light" and "radar", as it is stated in the first published reference (James Ring, "The Laser in Astronomy." p. 672-3, New Scientist Jun 20, 1963). 2. Even if you believe it is an acronym, it should not be all caps, since it follows the pattern of "laser" and "radar". 3. Most publications use "lidar", not "LIDAR" (see Google Books: [ [13]]}. Edgar Vekilnik, Jr. ( talk) 13:02, 8 May 2013 (UTC)
BDD ( talk) 18:12, 15 May 2013 (UTC)
When this article was moved from LADAR to LIDAR to Lidar all mention of LADAR was deleted. However, at least the USAF continues to use the term LADAR. The redirect left behind does not explain that LADAR is still in use, even if it is not the more common name. I believe the etymology section needs to add a mention of this alternative name. -- Lineagegeek ( talk) 21:35, 17 August 2013 (UTC)
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Is there a good source that debunks this? It doesn't seem to want to die otherwise. Andy Dingley ( talk) 10:55, 4 October 2015 (UTC)
I would like to add a section on lidar use in forestry. Any thoughts?
Here is a source I would use for reference:
Loganbarrett28 ( talk) 04:36, 14 March 2017 (UTC)Logan Barrett
Putting this on the talk page for future editors. I just went through and changed all (hopefully) the different spellings of lidar, for consistency. I used the NY Times format of lidar, non-capitalized in any way, unless it's the start of a sentence. If other groups use LiDAR or LIDAR I left those references alone. Timtempleton ( talk) 23:00, 13 April 2017 (UTC)
The 3 example papers for "Approaches of processing lidar data" are absolute rubbish. These are papers in third tier conferences and workshops that have absolutely no impact (23/4/10 citations). The summaries have very low quality and plenty of obvious mistakes. As an example "using Fast R-CNN[53] as this method doesn't need training" is completely false! I suggest to remove all of them or have at most one sentence per method. — Preceding unsigned comment added by 31.10.144.135 ( talk) 12:41, 17 November 2017 (UTC)
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The images at the top of the article are really messy and it makes you scroll a good amount before getting to the article. Should I add a gallery section? Lord David, Duke of Glencoe ( talk) 21:08, 6 February 2018 (UTC)
The picture of the "Uber self-driving car" has someone at the wheel. Are we sure this is a self-driving car? Morfusmax ( talk) 16:22, 9 February 2018 (UTC)
References
The first sentence says that lidar is "a surveying method that measures distance to a target by illuminating the target with pulsed laser light and measuring the reflected pulses with a sensor". This scope is too narrow on at least three accounts:
I suggest replacing the first sentence with something like, "Lidar is a type of sensor which obtains information by bouncing light off a target. Such information may include distance to target, direction of the target, reflectance, speed, or atmospheric conditions."
I also think that the article itself needs a huge amount of cleanup. I can probably look into reorganizing a lot of it when I have the time, although I'm working for a lidar manufacturer so it is probably best that someone else does it. For a good technical overview, I recommend the SPIE Field Guide to Lidar. dllu (t, c) 10:18, 9 June 2018 (UTC)
I'd enjoy if the history section included a timeline of when each application went into common service, or at least if the application sections included those years. If others agree this is a good idea, I can go ahead with a rough pass, with citations of course. Adamw ( talk) 07:08, 1 October 2018 (UTC)
No reference given for the claim that Radar is a pronunciation error of raider. Sounds very suspicions. Given the article isn't even about Radar, might be best to remove? — Preceding unsigned comment added by ChrisH256 ( talk • contribs) 19:54, 23 April 2019 (UTC)
I wonder if others might have more information to create a section about Lidar safety conserns. BBC made an article a while back about a photo-camera being ruined by a car with lidar ( https://www.bbc.com/news/technology-46875947), so I wonder if there isn't more. 62.238.252.34 ( talk) 09:37, 20 October 2020 (UTC)
I’d like more info on how iPhone 12 Pro Max does Lidar. DBGustavson ( talk) 20:27, 10 July 2021 (UTC)
Hello! This is to let editors know that File:Ouster OS1-64 lidar point cloud of intersection of Folsom and Dore St, San Francisco.png, a featured picture used in this article, has been selected as the English Wikipedia's picture of the day (POTD) for January 27, 2022. A preview of the POTD is displayed below and can be edited at Template:POTD/2022-01-27. For the greater benefit of readers, any potential improvements or maintenance that could benefit the quality of this article should be done before its scheduled appearance on the Main Page. If you have any concerns, please place a message at Wikipedia talk:Picture of the day. Thank you! Cwmhiraeth ( talk) 11:25, 22 January 2022 (UTC)
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Lidar is a method for determining ranges by targeting an object with a laser and measuring the time taken by the reflected light to return to the receiver. Lidar can also be used to make digital 3-D representations of areas on the Earth's surface and ocean floor, due to differences in laser return times, and by varying laser wavelengths. It has terrestrial, airborne, and mobile applications. This image shows an orthographic projection of a registered point cloud depicting the intersection of Folsom Street and Dore Street in San Francisco, California. The point cloud was captured over 18 seconds and registered in real time using an Ouster OS1 lidar unit mounted on a moving car. The points are coloured by a function based on raw lidar intensity multiplied by range, with orange signifying brighter regions and dark blue for darker regions. Lidar is a popular sensor for self-driving cars. Image credit: Daniel L. Lu
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LIDAR in this sense is a related means of measuring wind speed at a distance, using much the same technology. Andrewa ( talk) 17:12, 1 June 2022 (UTC)
There is an older source from 2018 saying that flash LiDAR cannot be done using silicon photonics in an eye-safe range and requires Gallium-Arsenide photonics. Is this still true? It seems like SiLc’s product might make this assumption false by proof by contradiction. I also thought using OPA made silicon photonics viable for flash LiDAR.
I am not an expert, but would appreciate any experts chipping in to re-examine this source for accuracy. 2603:8080:6001:9C81:0:0:0:1008 ( talk) 14:46, 18 February 2023 (UTC)
LIDAR was recently incorporated with 3D Printing in Bambu Lab's X1 Carbon. Would this be a worthwhile addition to the article? Trojari ( talk) 15:19, 20 March 2023 (UTC)
"Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "http://localhost:6011/en.wikipedia.org/v1/":): {\displaystyle d=\frac{c\cdot t}{2}}" Zhamelax ( talk) 08:49, 27 September 2023 (UTC)
How do i add a reference to a Wikipedia article on Edward Hutchinson Synge, who did theoretical work on LIDAR in 1930? Wikiijohn ( talk) 03:38, 25 January 2024 (UTC)