Patent ID: 7586437
Filing Date: 2009-09-08
Classification: G01S,H01Q

Abstract:
1. A method comprising transmitting a plurality of pulse transmission signals; receiving a plurality of received signals at a corresponding plurality of sensors, the plurality of sensors arranged in an array; using the plurality of received signals to determine a combination received signal; wherein the combination received signal has a wideband frequency spectrum and the combination received signal includes interference, noise, and at least one return due to one or more of the plurality of pulse transmission signals from at least one target; wherein each of the plurality of received signals has contributions from scatter returns from a plurality of arrival angles in a field of view of each sensor of the plurality of sensors and contributions due to each pulse transmission signal of the plurality of pulse transmission signals; wherein the combination received signal includes a plurality of pulse return signals corresponding to the plurality of pulse transmission signals; further comprising stacking the plurality of pulse return signals in a computer memory as a plurality of raw data vectors; further comprising performing a Fourier transform on the plurality of raw data vectors to transform the plurality of raw data vectors into a plurality of Fourier transform vectors associated with a corresponding plurality of frequencies and stacking the plurality of Fourier transform vectors in a computer memory to form a stacked Fourier transform vector; transforming the stacked Fourier transform vector into a narrow band data vector by multiplying the stacked Fourier transform vector with a predetermined frequency compensating matrix; performing a traditional space-time adaptive method for target detection on the narrowband data vector to form a plurality of outputs.