SYSTEM AND APPARATUS FOR SEARCH RADAR PROCESSING USING RANDOM MATRIX THEORY

摘要

A system and apparatus configured to process search radar data based on random matrix theory. During the time that the radar receiver is listening for return target echoes, the raw data stream may be fed to an analog to digital converter to create a sample voltage file. This sample voltage file may be processed by a digital signal processor that computes the eigenvalues of a sample covariance matrix generated for each pulse duration interval. The ratio of the largest to smallest eigenvalue is determined and compared to the system noise eigenvalue ratio. The sensitivity for detecting targets over the present state of the art is expected to be an approximate enhancement factor of one thousand, due to the detection of coherent energy instead of a transmitted waveform. The increase of detection distance for same radar cross section is expected to be an approximate 5.6 enhancement factor.

主权项

1. A radar receiver apparatus, comprising:
a radar receiver antenna; and an analog-to-digital converter, the analog-to-digital converter operationally coupled to the radar receiver antenna and configured to receive an analog radar signal from the radar receiver antenna, the analog-to-digital converter further configured to output a digital signal converted from the analog radar signal, the digital signal comprising a plurality of time-stamped time-slices; the radar receiving apparatus further comprising a processor configured to perform the steps of:
computing the ratio ζR of the largest to smallest eigenvalue of a constructed sample covariance matrix associated with the plurality of time-stamped time-slices;comparing the ratio ζR of each time-slice to a noise threshold value or a computed nuanced threshold value; andidentifying the presence of a signal by having ζR greater than the threshold.