Subscribe to Make Magazine Today!

Gregory “Mr. Vacuum Tube” Charvat (whose work was featured on the blog several times) breaks down an old school police radar:

It is amazing what additional information can be gained by modifying old equipment.

Here we connect the video output of an old police radar gun to the audio input of a laptop and applying basic signal processing techniques display doppler vs. time spectral plots of various targets.

Doppler signatures of birds, someone running, and cars are observed. Also relative radar cross sections of these targets are noticeable (cars are brighter than birds).

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net


3 Responses to Hacking a Police Radar

Your Thoughts?

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

  1. Pingback: Hacking a Police Radar | My Daily Feeds

  2. fightcube on said:

    Very cool! I had a similar idea years ago to make a video radar gun that would identify which car among a tight group of cars was speeding.

  3. Pingback: 경찰 레이더 해킹하기 | Make: Korea

Related Supplies at Maker Shed