Method and system for target detection

摘要

A method of detecting a physical target in a region-of-interest is disclosed. The method comprises: transmitting a pulse of radiation into the region-of-interest; receiving an echo signal from the region-of-interest; accessing a computer readable medium storing a dictionary defined over a plurality of dictionary atoms each describing a dictionary function corresponding to at least a time delay and a Doppler shift; calculating a coefficient for each dictionary function using the echo signal, thereby providing a plurality of coefficients, wherein a linear combination of all dictionary functions respectively weighted by the coefficients does not reconstruct the echo signal; and determining at least one of a range and a speed of the target based on the coefficients.

主权项

1. A method of detecting a physical target in a region-of-interest, comprising:
by an antenna or antenna array of a radiation transmitting-receiving system, transmitting a pulse of radiation into the region-of-interest, and receiving an echo signal from the region-of-interest; accessing, by a data processor, a computer readable medium storing a dictionary defined over a plurality of dictionary atoms each describing a dictionary function corresponding to at least a time delay and a Doppler shift; calculating, by the data processor, a coefficient for each dictionary function using said echo signal, thereby providing a plurality of coefficients, wherein a linear combination of all dictionary functions respectively weighted by said coefficients does not reconstruct said echo signal; and determining, by the data processor, at least one of a range and a speed of the target based on said coefficients, and transmitting a visual output indicative of said determination to a display.