Subaperture clutter filter with CFAR signal detection

A system comprising:

• a signal detection system configured to:
• receive a signal comprising a combination of a communication signal and radar clutter, the communication signal transmitted by a band-limited radio frequency (RF) transmitter, the radar signal transmitted by a radar transmitter, wherein the band-limited RF transmitter band-limits the communication signal in accordance with a frequency of the radar signal, and further wherein a first portion of the received signal comprises a first portion of the radar clutter, and a second portion of the received signal comprises a second portion of the radar clutter and the communication signal;
• identify the first portion of the radar clutter in the received signal;
• identify the second portion of the radar clutter in the received signal based upon the first portion of the radar clutter;
• and
• extract the communication signal from the received signal in response to the first portion and the second portion of the radar clutter being identified in the received signal.

A radar system comprising a memory that includes instructions that, when executed by a processor of the radar system, cause the processor to perform acts comprising:

• receiving a signal, the signal comprising;
• radar clutter that is based upon a radar signal transmitted by a radar transmitter, and
• a communication signal transmitted by a band-limited radio frequency (RF) transmitter, wherein the band-limited RF transmitter band-limits the communication signal as a function of at least one parameter of the radar clutter;
• generating a first subaperture comprising a first portion of the radar clutter;
• generating a second subaperture comprising the communication signal and a second portion of the radar clutter, wherein the first subaperture has a same area as the second subaperture;
• determining a signature of the first portion of the radar clutter;
• filtering the second subaperture with the signature of the first portion to facilitate removal of the second portion of the radar clutter from the second subaperture;
• and
• acquiring the communication signal in the second subaperture based upon removing the second portion of the radar clutter from the second subaperture.