A Software Defined Radio (SDR) Approach to Radar 

Nice Don! Glad to see you're still working with RF!

This is bad ass. Awesome project guys!

Next step - replace ADRV9361 with a half-dozen MPF-102s

Came for the home-made radar. Stayed for Girl from Ipanema theme music.

Very nice! I was wondering if anyone had done an SDR radar before. ThatADRV9361-Z7035 is a bit expensive for the hobbyist though.

Very good sound. Tom Jobim

great job brother! i want to know about modifications regarding ground surveillance radar. i am using adalm pluto.

this is very interesting have to try on my system, than you for inspiration

Great job! I am just wondering about the necessary modifications that I should make to use this project as GPR?

Great video. Is the matching filter implemented on the FPGA or on the software??

Could you hypothetically use it to receive but with an omnidirectional receiver to filter and attenuate incoming signals?

I made a crude dish reflector for a doppler microwave lamp circuit and was able to boost the range to where it saw me moving. I think it samples the return signal and hears an audio beat when the target moves near or farther away. Very cheap radar.

I had no idea that you had encoded music in your signal 6:30 7:50 I love the music though!

Back in the late 80's/early 90's I used to service the X-band traffic radar guns used by the Honolulu Police Department. They were essentially the same SDR approach as described in this video. The Gunn diode transmitter simultaneously acted as the local oscillator for the receiver and supporting circuitry simply processed the audio difference frequency translating it to the equivalent speed of the moving target. With a 'tapoff' to provide an external audio output, the radar gun could also be used to detect the sounds of voices when aimed at buildings with reflective window covering.

There are Blog ?

Coincidentally, the owner of the house in the background is asking his wife, "does it seem warm in the house?"

Sounds like they’re talking about a Retro Encabator

Can this system detect movement or presence of human through brick wall?

Ever heard of us privacy laws

Now make a AESA radar hehe

I admit I know nothing about SDR, so what is this for ?

apogee altitude 294,448 ft , wind speed of 160 knots,

Why not maximize the window?

I'm an old timer, but I can't understand the modern fascination with "software defined" (enter application here). Any digital system is by definition software defined, even if the "program" is hard wired by an arrangement of discrete chips, because someone had to "write" the algorithm or code (software) that makes it perform its intended purpose. Radar is nothing more than sending a short RF signal burst and measuring the return time, length of return time differences (if the radar antenna is not fixed), and phase of that signal when reflected from a distant object. Doing this can allow you to deduce approximate size, distance, and if done repeatedly, speed of an object. Modulation of the wave burst is not strictly necessary. Truly accurate radar had to wait for digital time keeping techniques, and it was implemented as soon as it was available. RF carrier signals transmitted over the air MUST BE sine waves; if not, you interfere with other users of the radio spectrum. If you want to digitally generate the base frequency, we are talking frequency synthesis (this includes RF mixing for heterodyning). Want to modulate the signal using digital techniques? Go ahead...but don't claim it is a new process. All forms of modulation are almost as old as radio itself - AM, FM, PM, packet, TDM, FSK (two tone or more), and many others. Most are done digitally at this point. Digital frequency selection has been standard on radios for many years. With "software defined" radio, you are not "defining" anything. You are merely replacing what analogue sections you can with digital processes, and making it where the end user can change key parameters of the controlling algorithm...things that have been done already. This seems much like how manufacturers advertise "digital" antennae for TV reception - a new name to stimulate interest and buying frenzies, but in reality the same thing you already have. Someone here tell me where I am wrong...what am I not seeing?

hey can we communicate?

I am going to build this and mount it on my DeLorean.

Should refrain from using abbreviation in the title. Software Defined Radio (SDR).

2.4 giga hetz ,

hello

I Love Brazil