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Altera_Forum's avatar
Altera_Forum
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12 years ago

Counter to find the delay between a radar and an object

Good evening, I am doing a project to measure a distance between a Radar and an object. I am sending a pulse throw the FPGA (DE0-nano) to the radar and I am receiving the signal echo in the FPG...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

I thought you are sending and receiving the pulse. Anyway that is another issue then. You need to send high frequency signal (On/OFF) e.g. 20 MHz or so. You need generate that from an NCO and pass i to DAC then some RF guy may help push it up to the air, receive it for you and pass it to ADC. Then you design some logic to detect the sine wave (possibly flooded with noise now). You can detect it based on some criteria e.g. amplitude threshold(and this follows gain at DAC...etc).

For an FPGA engineer, the logic part is not difficult. The RF side is.