Accession Number : ADD018078

Title :   Space-Based Asteroid Detection and Monitoring System.

Descriptive Note : Patent, Filed 25 Jan 94, patented 30 Apr 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Shaffer, William A ; McHugh, Martin J ; Wang, Dexter

Report Date : 30 Apr 1996

Pagination or Media Count : 8

Abstract : A satellite-borne system for the detection of near earth objects. The system periodically captures two images of the celestial sphere about the earth using a pair of linear arrays of optical detectors oriented so that the detectors image lines on the celestial sphere that are separated at each pixel in azimuth by the same angle. The position of the linear detectors is varied for each orbit of the earth by the satellite such that the entire celestial sphere can be imaged. The images produced by the two detector arrays are temporarily stored in memory until they can be processed using frame difference signal processing techniques. The results from the frame difference signal processing are transmitted to a ground station for further processing. The processing on the ground can include object classification, orbit tracking (using a time sequence of difference frames), and earth collision determination and warning.

Descriptors :   *OPTICAL DETECTION, *LINEAR ARRAYS, *OPTICAL DETECTORS, *ASTEROIDS, *PATENTS, *SPACE BASED, *SATELLITE TRACKING SYSTEMS, SIGNAL PROCESSING, GROUND LEVEL, ORBITS, MONITORING, TRACKING, SPHERES, SEQUENCES, TIME, SIGNALS, IMAGES, CLASSIFICATION, FRAMES, EARTH(PLANET), ANTENNA ARRAYS, DETERMINATION, GROUND STATIONS, COLLISIONS, ASTRONOMICAL BODIES

Subject Categories : Astronomy
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE