Research And Application On Data Processing Technology For Beacon Measurement Model Of CW Velocity Measurement Radar

There is a bigger system error in beacon measurement model data of CW velocity measurement radar.So the data can not be used to the calculation of velocity information for external ballistic measurement.The research on data processing technology of beacon measurement model data not only can increase effective speed measurement data,but also can solve the dependence of CW velocity radar on transmitter.In this paper,the system error of measurement data of beacon measurement is mainly caused by the instability of frequency source.Based on the working characteristics of the crystal oscillator,the aging and acceleration factors causing instability of frequency source are analyzed in depth.The corresponding mathematical model is established and the Doppler frequency offset estimation is completed in the beacon measurement mode.After error correction and frequency deviation correction,the data processing of the beacon is completed.The processing data are integrated to calculate the speed.And the speed are compared with the data of the response measurement model.The results show that the processed measured speed data of the beacon has high precision.Simulation test shows that the single station measurement error of 100s~150s is slightly larger,the largest error is 0.1m/s,and the error the error of the remaining time was less than 0.05m/s.The error in the x and y direction of the combined velocity error is within 0.1m/s.The error in the z direction is slightly larger,which is about 0.3m/s.It can meet the requirements of measuring speed accuracy of the general space mission.The results of this study have been successfully applied to many space launch missions.Through the analysis and processing of the measurement data of the beacon,the backup of the data of the response measurement mode is realized and the dependence of CW velocity radar on transmitter is reduced.The ability of CW velocity radar to complete the test mission has been improved,which has laid a solid foundation for the successful completion of the space launch mission.The results of this study have been successfully applied to many space launch missions.Through the analysis and processing of the measurement data of the beacon,the backup of the data of the response measurement mode is realized and the dependence of CW velocity radar on transmitter is reduced.The ability of CW velocity radar to complete the test mission has been improved,which has laid a solid foundation for the successful completion of the space launch mission.