Title :
Application of higher-order statistics for improved radar target detection in sea clutter
Author :
Pierce, Robert D.
Author_Institution :
Carderock Div., Naval Surface Warfare Center, Bethesda, MD, USA
Abstract :
The application of higher-order statistics (HOS) to the detection of radar targets takes advantage of HOS characteristics that allow the formulation of a test statistic that is unbiased by Gaussian noise and insensitive to constant target velocity. To make use or these characteristics using data from a coherent radar, the samples from the radar´s synchronous detector are formulated into special fourth-order products and coherently averaged. A second version of the HOS detector compensates for constant target acceleration. Comparisons are made between the two HOS detectors, the pulsed Doppler detector and the quadratic detector. The comparison shows a one to two dB improvement using the HOS detectors with Gaussian noise. However, examples are presented of an accelerating, synthetic target in actual, spiky sea clutter that show a 2.5 to 11 dB of improvement
Keywords :
Doppler effect; radar clutter; random noise; signal detection; statistical analysis; Gaussian noise; HOS detector; coherent radar; constant target acceleration; fourth-order products; higher-order statistics; pulsed Doppler detector; quadratic detector; radar target detection; sea clutter; synchronous detector; synthetic target; test statistic; Acceleration; Clutter; Detectors; Doppler radar; Gaussian noise; Higher order statistics; Radar applications; Radar detection; Statistical analysis; Testing;
Conference_Titel :
Radar Conference, 1994., Record of the 1994 IEEE National
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-1438-7
DOI :
10.1109/NRC.1994.328100
