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Henrik Forstén discusses the design and building of a 6 GHz pulse compression radar.
There are various sorts of pulse radars, and the one I need to make is a pulse compression radar that helps arbitrary waveforms. Producing solely linear frequency sweeps may very well be easier and ample for a lot of sensible functions, but it surely wouldn’t be as fascinating.
The requirement for arbitrary waveform implies that there must be a digital-to-analog converter (DAC) with giant sufficient sampling price to generate the transmitted waveform. The receiver additionally wants an ADC with giant sufficient pattern price to pattern the entire RF bandwidth.
Utilizing only a microcontroller isn’t potential for this software. An FPGA is required for correct timing of pulse technology and for managing the ADC and DAC information. Correct timing of pulse technology is important for correct operation. Switching between transmit and obtain must be executed shortly and precisely, any timing error in pulse triggering or within the receiver can be seen as giant distance error.
Just like my earlier radars, the working frequency can be round 6 GHz. That is the best frequency with many off-the-shelf low-cost parts on account of many shopper functions.
Learn all the main points within the publish right here.
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