초록 ▼

This invention relates to an adaptive detection system and method for analyzing range-doppler-azimuth data for target detection. The detection system has a threshold calculator for calculating a threshold value that is based on the standard deviation of the range-doppler-azimuth data and a predeterm

This invention relates to an adaptive detection system and method for analyzing range-doppler-azimuth data for target detection. The detection system has a threshold calculator for calculating a threshold value that is based on the standard deviation of the range-doppler-azimuth data and a predetermined probability of detection. The detection system also has a detection module in communication with the threshold calculator to receive the threshold value. The detection module calculates an estimated target amplitude and an estimated noise floor amplitude based on the range-doppler data that is located in a detection window. The detection module detects a target when the difference between the estimated target amplitude and the estimated noise floor amplitude is larger than the threshold value.

대표청구항 ▼

This invention relates to an adaptive detection system and method for analyzing range-doppler-azimuth data for target detection. The detection system has a threshold calculator for calculating a threshold value that is based on the standard deviation of the range-doppler-azimuth data and a predeterm

This invention relates to an adaptive detection system and method for analyzing range-doppler-azimuth data for target detection. The detection system has a threshold calculator for calculating a threshold value that is based on the standard deviation of the range-doppler-azimuth data and a predetermined probability of detection. The detection system also has a detection module in communication with the threshold calculator to receive the threshold value. The detection module calculates an estimated target amplitude and an estimated noise floor amplitude based on the range-doppler data that is located in a detection window. The detection module detects a target when the difference between the estimated target amplitude and the estimated noise floor amplitude is larger than the threshold value. mounting surface in contact with said housing. 9. The LED signal of claim 6, wherein: said signal is a 12" nominal size, and said light transmission surface has a spherical shape having an arc radius greater than 24". 10. The LED signal of claim 6, wherein: said signal is a 8" nominal size, and said light transmission surface has a spherical section having an arc radius greater than 18". 11. The LED signal of claim 6, wherein: said means for attachment includes means for aligning said distribution cover on said housing in a desired orientation. 12. The LED signal of claim 6, further comprising: a sealing means to environmentally seal said LED signal. 13. The LED signal of claim 12, wherein: said sealing means is an o-ring. 14. The LED signal of claim 6, wherein: said means for attachment is at least one connection tab on said distribution cover arranged and configured to mate with a corresponding tab socket on said housing. 15. The LED signal of claim 14, wherein: said tab socket includes a tab socket key arranged and configured to mate with a corresponding cavity in said connection tab. 16. The LED signal of claim 6, wherein: said housing and said cover are arranged and configured for retro-fitting into a traffic signal having an incandescent light source, optical elements and an incandescent light source reflector, said LED signal sized to fit within a cavity formed by said traffic signal incandescent light source reflector upon removal of said incandescent light source and said optical elements. 17. The LED signal of claim 16, wherein: electrical power connection is made by connection to an incandescent light source socket. 18. The LED signal of claim 6, wherein: said at least one LED are arranged and configured to emit light upon a collimating element positioned between said cover and said at least one LED. 19. The LED signal of claim 18, wherein: said at least one LED emits light in an overlapping light pattern such that failure or diminished light output of a single LED is not discernable to a viewer of said LED signal. 20. The LED signal of claim 18, wherein: said collimating element includes collimating zones arranged and configured with respect to the distribution of said LEDs on said PCB. 21. The LED signal of claim 20, wherein: said collimating zones are arranged in concentric circles. 22. The LED signal of claim 20, wherein: said collimating zones are arranged in horizontal or vertical rows. 23. The LED signal of claim 20, wherein: said collimating zones are arranged in circles or arcs and horizontal and/or vertical rows. 24. The LED signal of claim 1, wherein: said housing has external electrical power connectors comprising: a cavity in an external end of each external electrical power connector, and a connector cover having a compression element; upon insertion of a conductor into said cavity said connector cover compression element is frictionally inserted into said cavity thereby holding said conductor securely in said cavity in electrical contact with said electrical connector. 25. The LED signal of claim 1, wherein: said at least one LED is arranged in at least one substantially circular configuration. 26. The LED signal of claim 1, wherein: said at least one LED is arranged in at least one substantially linear configuration. 27. An LED signal comprising: a housing having an interior area and an open end; at least one LED; a light pipe collector for use with at least one LED comprising: an optical member composed of light transmissive material, at least one total internal reflection surface, and a receiving chamber for receiving said at least one LED; said at least one LED emitting light in a main direction and a non-main direction; said at least one LED arranged and configured within said interior, of said housing; said total internal reflection surface operating to redirect said non-main direction