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  1. #1
    Speed Demon
    Join Date
    Dec 2007
    Posts
    577

    Default Can LIDAR be shot behind closed window?

    When it's not practical to roll down the window, i.e. at night in a grassy median with mosquitoes and bugs?

  2. #2
    Lead Foot
    Join Date
    Oct 2011
    Location
    Canada
    Posts
    470

    Default Re: Can LIDAR be shot behind closed window?

    Quote Originally Posted by lordhawhaw View Post
    When it's not practical to roll down the window, i.e. at night in a grassy median with mosquitoes and bugs?
    Yes but it sucks, range is insanely reduced. Also, I believe some owner's manual are saying to not do that as it may produce false readings. If it is impractical to run laser, I say just run off axis radar or do something else.

  3. #3
    Radar Fanatic
    Join Date
    Dec 2007
    Posts
    2,540

    Default Re: Can LIDAR be shot behind closed window?

    The most important factor as far as accuracy goes is the slope of the window, the closer to vertical the less it'll effect the readings; but it's like putting dirty glasses or sunglasses on the LIDAR gun, one more thing it needs to see through....so as mentioned, reduced range and therefore not advised. They can also be used in rain, snow and fog, just because visibility is hampered doesn't mean the gun won't work. In both situations, using weather mode when a LIDAR gun is so equipped, may help make it easier to get readings, however it often automatically caps the range at which a reading can be taken, so that the gun can process the return pulses differently.

  4. #4
    Speed Demon
    Join Date
    Dec 2007
    Posts
    577

    Default Re: Can LIDAR be shot behind closed window?

    Is it safe to assume LIDAR use by LEO in the middle of nowhere is rare at night?

  5. #5
    Radar Fanatic
    Join Date
    Oct 2010
    Location
    OHIO
    Posts
    1,848

    Default Re: Can LIDAR be shot behind closed window?

    Wait until you receive the laser alert from the LEO bouncing it off the outside, rearview mirror.

  6. #6
    Lead Foot
    Join Date
    Oct 2011
    Location
    Canada
    Posts
    470

    Default Re: Can LIDAR be shot behind closed window?

    Quote Originally Posted by lordhawhaw View Post
    Is it safe to assume LIDAR use by LEO in the middle of nowhere is rare at night?
    I wouldn't say safe but sorta. The traffic is probably what you need to check and area. If it is on the interstate, laser is always a possibility simply because it is extremely easy to say who is doing what. I guess the less the traffic, and the lazier the LEO is, the more likely you will see radar

  7. #7

    Default Re: Can LIDAR be shot behind closed window?

    Off topic a bit ,

    what I see often is a cruiser parked the opposite side on my travelling
    way , letting think they watch the side they are on , but in fact
    they shoot laser ON my travelling way ....today the leo had
    a DOS (denial of speed) from my L-eee ....he put his head out
    of the window looking at my car .....I never ever look at him ,
    it can tip him off something is going....
    O divine art of subtlety and secrecy!
    Through you we learn to be invisible, through you inaudible;
    and hence hold the enemy's fate in our hands.

    -- Sun Tzu, The Art of War, c. 500bc

 

 

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