CPC G01S 7/0234 (2021.05) [G01S 7/292 (2013.01); G01S 13/288 (2013.01); G01S 13/325 (2013.01); G01S 13/584 (2013.01); G01S 13/931 (2013.01)] | 19 Claims |
1. An apparatus, comprising:
a receiver radar configured to:
receive, from a transmitter radar, a plurality of chirps of a radar signal, wherein the plurality of chirps of the radar signal are phase coded according to a first set of phase-shift keying (PSK) modulated phase-coded symbols and a second set of PSK modulated phase-coded symbols, wherein the first set of PSK modulated phase-coded symbols convey a plurality of encoded information bits, and wherein the second set of PSK modulated phase-coded symbols are reference symbols having a known phase modulation;
determine a phase difference between the receiver radar and the transmitter radar based on a phase of the plurality of chirps of the radar signal phase coded according to the second set of PSK modulated phase-coded symbols;
equalize the phase of the plurality of chirps of the radar signal based on the determined phase difference;
determine a phase code of the first set of PSK modulated phase-coded symbols based on the equalized phase of the plurality of chirps; and
decode the plurality of encoded information bits based on the phase code of the first set of PSK modulated phase-coded symbols.
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