Adjusting Si5338 phase on the fly
Posted: Sun Dec 20, 2015 2:56 pm
Hello there, I would like to experiment with strobe-sampled radar with the BladeRF; essentially, by transmitting the same pulse, and then sampling the return pulses at slightly different phase offsets, I aim to reconstruct a signal with an effective sampling rate much higher than the actual sampling rate of the ADC. My plan is to transmit radar pulses with a stable Tx clock from the Si5338 (e.g. leave LMS_TX_CLK constant), and then increment the phase offset of LMS_RX_CLK for each pulse I transmit. (This is, of course, assuming that the targets in my radar scene stay relatively motionless as I change the phase of the clock).
I have never modified the hardware or software of the bladeRF before; is this modification something that would be relatively simple to do? I imagine I could hack together some FPGA nonsense to get this working, but I wanted to ask ya'll your opinion on how reasonable this is (from the implementation side of things; I'm pretty confident on the underlying theory), and whether this kind of operation is already partially implemented somewhere else.
I have never modified the hardware or software of the bladeRF before; is this modification something that would be relatively simple to do? I imagine I could hack together some FPGA nonsense to get this working, but I wanted to ask ya'll your opinion on how reasonable this is (from the implementation side of things; I'm pretty confident on the underlying theory), and whether this kind of operation is already partially implemented somewhere else.