Apparatus and method for determining aircraft position and velocity

摘要: An apparatus and method for determining aircraft position velocity is disclosed. The system includes two CCD sensors which take overlapping front back radiant energy images of areas the earth's surface. A signal processing unit digitizers deblurs data that comprise each image. first second are then processed to determine longitudinal lateral relative image shifts produce maximum degree correlation between them. compares find necessary maximize those images. Various techniques, including classical correlation, differencing zero-mean correction, normalization, windowing, parallel disclosed shift signals signal, corrected by an altitude factor respectively a ground distance signal. These can be divided time delay forming signals. also other navigational measurements, such as yaw, rotation, roll track aircraft. measurements may error checked against independent output various displays.