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Laser from plane scanning queens ny last night

 
Burt Gummer

User ID: 7702124
United States
11/19/2012 09:58 PM

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Re: Laser from plane scanning queens ny last night
[link to www.airborne1.com]

This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models.
 Quoting: Salt


[link to www.airborne1.com]

This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models.
 Quoting: Salt


Makes sense.
They are making a topographic 3-D map of what is left of Breezy Point after Sandy.
 Quoting: Burt Gummer



Those systems use IR, they do not paint the landscape in visible green light...burnit
 Quoting: LASERGURU 28023670


It's not FLIR system they use for topographic mapping....suggest you read up....because you are clueless.

[link to books.google.com]


clues
LASERGURU
User ID: 28023670
Canada
11/19/2012 10:08 PM
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Re: Laser from plane scanning queens ny last night
[link to www.airborne1.com]

This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models.
 Quoting: Salt


[link to www.airborne1.com]

This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models.
 Quoting: Salt


Makes sense.
They are making a topographic 3-D map of what is left of Breezy Point after Sandy.
 Quoting: Burt Gummer



Those systems use IR, they do not paint the landscape in visible green light...burnit
 Quoting: LASERGURU 28023670


It's not FLIR system they use for topographic mapping....suggest you read up....because you are clueless.

[link to books.google.com]


:clues:
 Quoting: Burt Gummer



Clueless?? surly you jest.. Perhaps you should consult that very link and directly below figure 2.36 it CLEARLY states that the laser used is a 900nm pulsed at 8khz.

Hate to break it to ya, seeing as im clueless and all (LOL)
but 900nm is the monochromatic single emission point USED. 900nm is infrared Einstein..

Common visible wavelengths as in low cost green laser pointers are 532nm. Anything below 400nm is getting into the UV spectrum, and anything above 680nm the IR, NIR at the lower point.

THIS MEANS YOU DO NOT SEE IT... get it? s226
Anonymous Coward
User ID: 21291600
United States
11/19/2012 10:14 PM
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Re: Laser from plane scanning queens ny last night
[link to www.airborne1.com]

This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models.
 Quoting: Salt


...


Makes sense.
They are making a topographic 3-D map of what is left of Breezy Point after Sandy.
 Quoting: Burt Gummer



Those systems use IR, they do not paint the landscape in visible green light...burnit
 Quoting: LASERGURU 28023670


It's not FLIR system they use for topographic mapping....suggest you read up....because you are clueless.

[link to books.google.com]


:clues:
 Quoting: Burt Gummer



Clueless?? surly you jest.. Perhaps you should consult that very link and directly below figure 2.36 it CLEARLY states that the laser used is a 900nm pulsed at 8khz.

Hate to break it to ya, seeing as im clueless and all (LOL)
but 900nm is the monochromatic single emission point USED. 900nm is infrared Einstein..

Common visible wavelengths as in low cost green laser pointers are 532nm. Anything below 400nm is getting into the UV spectrum, and anything above 680nm the IR, NIR at the lower point.

THIS MEANS YOU DO NOT SEE IT... get it? s226
 Quoting: LASERGURU 28023670


this might sound really dumb, but aren't lasers, when being used around people, required to be visible, for safety reasons.
Anonymous Coward
User ID: 27813827
United States
11/19/2012 10:15 PM
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Re: Laser from plane scanning queens ny last night
i've seen the same in MN maybe a month ago now
 Quoting: Anonymous Coward 27813827


what did you see?

what color was the laser? how did it scan?
 Quoting: Anonymous Coward 27963234


wouldn't call it a laser really, maybe a bunch of lasers?

but a green spotlight that i could see going to the ground
Burt Gummer

User ID: 7702124
United States
11/19/2012 10:18 PM

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Re: Laser from plane scanning queens ny last night
[link to www.airborne1.com]

This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models.
 Quoting: Salt


...


Makes sense.
They are making a topographic 3-D map of what is left of Breezy Point after Sandy.
 Quoting: Burt Gummer



Those systems use IR, they do not paint the landscape in visible green light...burnit
 Quoting: LASERGURU 28023670


It's not FLIR system they use for topographic mapping....suggest you read up....because you are clueless.

[link to books.google.com]


clues
 Quoting: Burt Gummer



Clueless?? surly you jest.. Perhaps you should consult that very link and directly below figure 2.36 it CLEARLY states that the laser used is a 900nm pulsed at 8khz.

Hate to break it to ya, seeing as im clueless and all (LOL)
but 900nm is the monochromatic single emission point USED. 900nm is infrared Einstein..

Common visible wavelengths as in low cost green laser pointers are 532nm. Anything below 400nm is getting into the UV spectrum, and anything above 680nm the IR, NIR at the lower point.

THIS MEANS YOU DO NOT SEE IT... get it? s226
 Quoting: LASERGURU 28023670


Yep...clueless.
Clearly shown by the link I posted...which you ignored.
Topographic equipped helicopters are nothing new.

...and if they wanted to hide it....and the copter....they can and would have.


You don't need IR to topographic surveys....nor is that wavelength conducive to topographic mapping details.

Read the link I posted if you wish to learn.
LASERGURU
User ID: 28023670
Canada
11/19/2012 10:20 PM
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Re: Laser from plane scanning queens ny last night
this might sound really dumb, but aren't lasers, when being used around people, required to be visible, for safety reasons.
 Quoting: Salt


Not at all. Police hit you with lidar every day, though they run in the NIR @ 785nm IIRC. You may see faint red in dark conditions.

The FDA has plenty on the subject should you choose to read further in.


BTW, those mapping systems (as described in mrcluelesses link)are good up to 200M, that plane would have stirred up more attention if it were in fact scanning, as it would be right on your headtomato
Anonymous Coward
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11/19/2012 10:32 PM
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Re: Laser from plane scanning queens ny last night
LASERGURU
User ID: 28023670
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11/19/2012 10:35 PM
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Re: Laser from plane scanning queens ny last night
Yep...clueless.
Clearly shown by the link I posted...which you ignored.
Topographic equipped helicopters are nothing new.

...and if they wanted to hide it....and the copter....they can and would have.


You don't need IR to topographic surveys....nor is that wavelength conducive to topographic mapping details.

Read the link I posted if you wish to learn.
 Quoting: Burt Gummer



LOL, yes, they also mention 1550nm...

There is a reason why they use laser and not any other source light. It monochromatic. This means they can filter incoming light to that wavelength for data acquisition.
Using any visible wavelengths = noise

Using visible green makes as much sense as you do. Please point me to a single document where visible light is used for anything scanning / image rendering, other than the entertainment aspect.

Your point is moot. I read the page and verified my initial thoughts.

Visible wavelengths are not used for many reasons, I suggest you go to samslaserfaq and educate your ass. Ive been working R&D with coherent light for 10years son. Ive seen it all, and read it all. I work with whats new and cutting edge.

The only mass produced visible systems you will see is for TV and projectors. There is a reason for that too, you can see ithiding
scryangel

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11/19/2012 10:39 PM
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Re: Laser from plane scanning queens ny last night
probably searching for intelligent life i wouldnt worry about it lol.yoda
tim henning
Anonymous Coward
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11/19/2012 11:09 PM
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Re: Laser from plane scanning queens ny last night
LIDAR. And yes, LIDAR can use all kinds of different wavelengths (Not just IR like one dumbfuck poster said), including green colored lasers which are cheap and high powered enough for LIDAR purposes and measuring any submerged objects.

Bathymetry LIDAR is also green.
N3m3s1s

User ID: 4637200
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11/19/2012 11:22 PM

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Re: Laser from plane scanning queens ny last night
Guru and Burt

Thanks for the specifics. This is all very interesting.
LASERGURU
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11/19/2012 11:34 PM
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Re: Laser from plane scanning queens ny last night
LIDAR. And yes, LIDAR can use all kinds of different wavelengths (Not just IR like one dumbfuck poster said), including green colored lasers which are cheap and high powered enough for LIDAR purposes and measuring any submerged objects.

Bathymetry LIDAR is also green.
 Quoting: Anonymous Coward 24957083



Another simpleton : /

Seeing as you skipped through this discussion, and promptly displayed your fictitious balls without reading first. We are not speaking of the use of 532nm in in underwater / moisture / density measurements. We are speaking of over land. That is unless they are scanning puddles for a lost set of keys.



"This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models."

He posted that ^^^^^^^^^^^

For that type of scanning, you know, the one we are discussing here, they us IR and NIR, for a reason.

I never said that 532nm was never used, I said no visible ie 532nm in this scenario given the details outlined by the OP, including the date.

You sir are silly, go grease up your ears and see if you can get your head out of your ass 5a
Mkguyver

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11/19/2012 11:40 PM

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Re: Laser from plane scanning queens ny last night
Anonymous Coward
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Australia
11/20/2012 12:03 AM
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Re: Laser from plane scanning queens ny last night
a plane of some sort was fling over head he looked up at it and saw that it had a green light on the bottom of the plane
 Quoting: ravenswoodPJ


lol all planes have them its a nav light cruise
Anonymous Coward
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Australia
11/20/2012 12:10 AM
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Re: Laser from plane scanning queens ny last night
[link to en.wikipedia.org]

Right-of-way lights - A red light will be mounted on the left or port side of the craft and a green on the right or starboard side. In a situation where the paths of two watercraft or aircraft cross, these lights help each crew determine the other craft's direction and who has right-of-way. When two craft have crossing paths, each sees a red or green running light. The one on the port side of the other, which must yield right of way, sees red, while the one on the starboard side of the other, which has right of way, sees green.
Anonymous Coward
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11/20/2012 12:17 AM
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Re: Laser from plane scanning queens ny last night
My brother saw the same thing last night around 3 or 4am. He told me about today. Only he was in Sheepshead Bay, Brooklyn. He said the laser was green and towards the bottom or middle of the plane and that the laser covered a wide range scanning the area.
AFGW
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11/20/2012 12:21 AM
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Re: Laser from plane scanning queens ny last night
Maybe this will help:

[link to www.ubergizmo.com]
Anonymous Coward
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11/20/2012 12:39 AM
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Re: Laser from plane scanning queens ny last night
i might be wrong, but maybe the visible light is included with the IR as well, sort of like lets the person using it "paint" the area they want to scan with IR maybe?
Anonymous Coward
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11/20/2012 01:11 AM
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Re: Laser from plane scanning queens ny last night
[Those systems use IR, they do not paint the landscape in visible green light...burnit
 Quoting: LASERGURU 28023670


Might this be helpful, albeit at this point woefully repetitive?

[link to www.ngs.noaa.gov]

In theory, any light source can be used to create a lidarinstrument

Near-Infrared wavelength

Used by most airborne terrestrial lidarsystems
The most common laser is the solid-statelaser which can produce radiation at an IR wavelength of 1064 nm

Easily absorbed at the water surface (unreliable water surface reflections).

Wavelengths utilized: 1000 –1500 μm

Blue-Green Wavelength

Used by all airborne bathymetric and“topo-bathy” systems

Solid-state IR laser output is frequency doubled to produce output at 532 nm
Can penetrate water, but signal strength attenuates exponentially through the water column
Anonymous Coward
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11/20/2012 01:13 AM
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Re: Laser from plane scanning queens ny last night
Advances in ­nonlinear ­optical crystals have ­improved conversion ­efficiencies and expanded possible applications for ­diode-pumped solid-state lasers operating in the 900-nm region.
The second harmonics of solid-state 900-nm lasers show promise for a variety of applications requiring blue output, such as biomedical instrumentation, reprographics, and displays.1 The 900-nm fundamental and the third and fourth harmonics in the ultraviolet are also in demand for applications such as ­water-vapor light detection and ranging (lidar), ozone ­differential-absorption lidar (DIAL), and UV-resonance Raman spectroscopy. ­Recent developments in nonlinear optical materials have led to higher conversion efficiencies and higher blue and UV powers than have been commercially available for these applications, and are generating renewed interest in the harmonics of these 900-nm lasers

[link to www.laserfocusworld.com]
koolkat
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11/20/2012 01:21 AM
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Re: Laser from plane scanning queens ny last night
it was a plane that uses the difference between the sea surface and the sea floor as calculated from the aircraft's altitude to generate hydrographic data. i just saw it too in staten island
assassinforfather

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11/20/2012 01:27 AM

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Re: Laser from plane scanning queens ny last night
My son came home at 3 am this morning.He told me that while he was walking home from the subway a plane of some sort was fling over head he looked up at it and saw that it had a green light on the bottom of the plane from which a green laser scanned across a large area of ground and passed over him as well,a gas station attendent saw the same thing as him and tried to hide from it.He stayed out side for awhile and the plane continued ot fly over the area scanning.Did anyone else happen to see this or does anyone know what this could be about?
 Quoting: ravenswoodPJ


It does sound like the drones, first created by military, that will be unleashed in big cities and they have weapons and can spy through your window if there are no curtains. They are unconstitutional and only the begining. Shit, the begining of the end of individual rights left after 911!
Keep it simple and always give <3
congineer
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11/20/2012 01:52 AM
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Re: Laser from plane scanning queens ny last night
A month ago low flying plane in upper michigan had green laser equipment making passes over large areas.
Anonymous Coward
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11/20/2012 02:13 AM
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Re: Laser from plane scanning queens ny last night


1:53 in


I had a prophetic dream about this too ...

Scares the living hell out of me and only a handful of people know what's coming down.
Anonymous Coward
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11/20/2012 02:42 AM
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Re: Laser from plane scanning queens ny last night
Just seen a plane flying over the Meadowlands in NJ. Low and slow flying prop plane. The green light was coming from the bottom and kind of looked like a barcode scanner. It passed again as I was typing. It's about 500 ft up.
LASERGURU
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11/20/2012 02:45 AM
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Re: Laser from plane scanning queens ny last night


1:53 in


I had a prophetic dream about this too ...

Scares the living hell out of me and only a handful of people know what's coming down.
 Quoting: Anonymous Coward 9906991


Remember, light travels in a straight line. Unless you have something hovering in front of a bare window, their field of view becomes limited depending on the entry angle.

On a positive note, all one needs to defend if such a device came to use, is find its wavelength, and either match it as a jamming device (a small countermeasure mounted pointing toward the window), or stop the light in its tracks by applying a tint like film which absorbs it.

For neat little experiment you can try with a dollar store pointer, you can make a listening device. Its a fun project..

All you need is about 3$ in parts and a laptop. Soldering iron recommended, but not 100% necessary if you dont have one.

Anonymous Coward
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11/20/2012 03:03 AM
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Re: Laser from plane scanning queens ny last night
Maybe it was this

PfromWashintonHeights​
User ID: 28131588
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11/20/2012 05:11 AM
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Re: Laser from plane scanning queens ny last night
just say the same thing at about 5 am in upper manhattan

looks almost like a ww2 plane with the rounded wings no lights on it accept for the bright green light at the bottom and i it was a little hazy so you could clearly see the gaint laser triangle as it scans

it really freaked me out
but reading this it would seem as topography would be a logical explanation
PfromWashintonHeights​
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11/20/2012 05:24 AM
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Re: Laser from plane scanning queens ny last night
[link to www.nytimes.com]

ok this seems to be what it is, matches pretty well
Anonymous Coward
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11/20/2012 05:39 AM
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Re: Laser from plane scanning queens ny last night
My son came home at 3 am this morning.He told me that while he was walking home from the subway a plane of some sort was fling over head he looked up at it and saw that it had a green light on the bottom of the plane from which a green laser scanned across a large area of ground and passed over him as well,a gas station attendent saw the same thing as him and tried to hide from it.He stayed out side for awhile and the plane continued ot fly over the area scanning.Did anyone else happen to see this or does anyone know what this could be about?
 Quoting: ravenswoodPJ


Back on Feb 21, 2008, the US shot down a rogue satellite. That night, I noticed that there was a green meteor or some fast flying green light. A few minutes later, Fox News announced that the rogue satellite had been shot down. Perhaps we saw the same thing, your son and I. The other thing I saw that same night was an unexplained array of lights in the sky similar to the Phoenix lights. The green light that I saw did not appear to be a missle but perhaps it was a lazer that was used to shoot down the satellite.

This is the satellite and the event I am talking about:
[link to en.wikipedia.org]

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