Sampling of the numerous questions I get on harmonic radar, from Fortune 100 companies on down over the past decade.
Numerous refereed articles show USRP and GNU Radio being used to take basic radar measurements. What is necessary to actually make them work?
It’s best to do quick tests very early in the project to detect unknowns that might take some time to fix, or even lead to different hardware choices.
Narrowband radar on lowband VHF (25-50 MHz) seems possible via simulation and initial measurement. Subspace methods are necessary due to narrow frequency sep...
Many nations have license free spectrum slices up to hundreds of kHz wide in the 25-60 MHz range. These frequencies can be exploited for short range, humanit...
Particularly with software-defined-radio, it has become feasible for electronics enthusiasts and engineering students to build their own radar. Here are a fe...
Red Pitaya is a dual-DAC + dual-ADC 125 MHz + Zynq FPGA/CPU singleboard SDR powerhouse for <$200. Here’s how to get quick radar measurements.
MIT Lincoln Lab has been using an HF experimental license WH2XBH with transmitter located at Haystack.
The thought of FMCW or DSSS radars operating at HF might initially seem frightening, but such radars are sharing HF in increasing numbers.
The simplest waveform a radar can use is a continuous unmodulated tone. Here is an example GNU Radio-based CW software defined radar using Red Pitaya.
Calibrating a radar requires controlled conditions. That’s very difficult at HF, so we can use low-band VHF with the procedure and material described.
FCC regulations allow operating license-free at low-band VHF, which is relatively uncluttered these days.
When you need a point target in high clutter environments, a radar transponder is good to consider. Here’s how to make a software-defined transponder.
We are delighted to announce our project team for the open source aeronomy radar has been selected and assembled.
Factors to consider when choosing a frequency pair for a harmonic radar system.
Hackaday SDR article by Juha Vierinen shows how to make a radar from $20 USB RTL-SDR sticks.
The Coffee Can Radar is working, albeit without image processing hooked up yet. Using no receive amplification, I was easily able to pick up reflections fro...
Oops, my board design left the output connectors too close, it would have been impossible to screw the plugs onto the jacks. My personal license of Sonnet di...
Designed a new Wilkinson power splitter for the coffee can radar based on information from various texts, mainly Gupta’s. The S-parameter plots came out as I...
My original plan of using a surface mount toroidal splitter was dashed when the one unit I had obtained was defective. Rather than deal with another wait to ...
built six radar modules using Manhattan-style construction. Almost free!
block diagram for first complete pass at the coffee can through wall radar system
with my first research internship upcoming, we will try to develop a radar on a cost scale practically never seen before.