Dispersive Object Detector And Clutter Reduction Device

摘要

An apparatus for detecting a dispersive object in non-dispersive clutter comprising a multi-frequency radar, a signal processor which computes the elapsed time between when each frequency is transmitted and that same frequency is received and the dispersion statistics related to the several frequencies. A dispersion analyzer produces a dispersive object discrimination value which is compared with a threshold by which a detection is declared. The apparatus also utilizes dispersion statistics to differentiate between dispersive and non-dispersive radar returns in order to reject the non-dispersive signals and pass the dispersive signals to a signal integrator which increases the signal-to-clutter ratio thereby improving the probability of detection of subsequent target detection processes.

主权项

1. An apparatus comprising:
a. a frequency selective signal receiver configured to receive at least one reradiated electromagnetic signal resulting from an interaction of an irradiating electromagnetic signal with an object, said irradiating electromagnetic signal including at least one first irradiating frequency component and at least one second irradiating frequency component, and said reradiated electromagnetic signal including at least one first reradiated frequency component and at least one second reradiated frequency component; b. a signal processor configured to compute:
i. at least one first elapsed time from the transmission of said at least one first irradiating frequency component to the reception of said at least one first reradiated frequency component, and,ii. at least one second elapsed time from the transmission of said at least one second irradiating frequency component to the reception of said at least one second reradiated frequency component, and,iii. at least one spectral dispersion statistic utilizing said at least one first elapsed time and said at least one second elapsed time; c. a dispersion analyzer configured to utilize said at least one spectral dispersion statistic to produce a dispersive object discrimination value; d. an output device configured to produce a dispersive object detection signal when said dispersive object discrimination value exceeds a threshold.