Joint synthetic aperture radar plus ground moving target indicator from single-channel radar using compressive sensing

A method performed at a radar system, the method comprising:

• receiving, at a controller of the radar system, a first value for a first frequency, wherein the first frequency indicates when a signal is to be transmitted according to a first schema;
• receiving, at the controller, a second value for a second frequency, wherein the second frequency indicates when a signal is to be transmitted according to a second schema;
• dividing, at the controller, the first value by the second value to generate a plurality of possible transmission timings at which a signal transmission is to occur;
• selecting, at the controller, for a first instance of signal transmission, a first transmission timing from the plurality of possible transmission timings;
• and
• transmitting a first signal at the selected first transmission timing, the first signal transmitted from a transceiver of the radar system.

A computer-readable storage medium comprising instructions that, when executed by a processor, cause the processor to perform acts comprising:

• defining a duration of a time window as being a period of a chirp signal utilized to generate synthetic aperture radar (SAR) images;
• for each adjacent and non-overlapping time window in a sequence of time windows:
• defining a number of potential time points in the time window as being the frequency of the chirp signal used to generate SAR images divided by the frequency of a chirp signal used to generate ground moving target indication (GMTI) images, wherein each of the potential time points is evenly-spaced throughout the time window with respect to each other;
• and
• pseudo-randomly selecting a time point from amongst the potential time points;
• and
• transmitting a chirp at the selected time point while refraining from transmitting chirps at any of the other potential time points in the time window.