METHOD FOR DETERMINING MEASUREMENT ERRORS speed of the aircraft inertial navigation systems and on-board navigation systems INDEPENDENT FOR ITS IMPLEMENTATION

摘要

1. A method for determining the velocity measurement errors of the aircraft (LA) inertial navigation system (INS) comprising sensing earth's surface microwave electromagnetic signals in several directions with change of the azimuth and elevation angle, with the modulation signal probe allowing measurement of time delay and Doppler frequency shift signals reflected resolvable surface elements, characterized in that the produced coherent were selected on angular coordinates Nats to form monopulse sum and difference azimuth and elevation channels in the normal coordinate system INS reception of reflected signals, obtaining for each channel of complex radar image (RLI) irradiated surface in coordinates Doppler frequency offset - range of probing in each i-th direction, which differ in the azimuth and elevation planes is not less than the width of the radiation pattern, i = 1, ... i, I≥3; finding the sum of radar images each sensing channel direction with the most striking points determining their range and Doppler frequency offset calculation using the difference channel radar image azimuth and elevation angle of the selected bright spots, the calculation on the received data and radar data INS velocity error of measurement and correction ANN. ! 2. A method according to claim 1, characterized in that the selection of bright dots on the total RLI follows: RLI computed luminosity equal to the square of the module of complex radar data sum signal is computed threshold level equal to the increase