Stochastic Pulses And The Effect In Reduced-dynamic Orbit Determination

Reduced kinetic dynamic orbit after orbit is batch processing to get the filter as apriori orbit, then increasing the random pulse parameters in smoothing process to absorbthe kinetic model does not take into account the disturbing force and has not beenaccurately modeled kinetic model error. According to the most preferred right betweengeometric and kinetic models observation information in the GPS observations provided,thereby weakening the impact of dynamic model, we call this approach simplifies thedynamic orbit method.Reduced dynamic orbit core is how to determine reasonableintervals and random pulse priori standard deviation of size, which is determined betweenthe dynamics of the reference orbit LEO satellite information provided and geometricinformation provided by the observations of the most relative weights to make full use ofkinetic information and geometric information LEO satellites.Reduced dynamic orbit core is how to determine reasonable intervals and randompulse priori standard deviation of size, which is determined between the dynamics of thereference orbit LEO satellite information provided and geometric information provided bythe observations of the most good selection of the right to make full use of kineticinformation LEO satellite observations with geometric information.This paper analyzes the impact of the Reduced kinetic study of random pulse orbitdetermination. With CHAMP satellite as a research object to BERNESE5.0softwareplatform, the main findings are as follows:1.Valuation model size and accuracy of Earth’s gravitational field on random pulse.Model error is larger forces acting on the LEO satellite, the valuation of random pulses islarge, then the regulation of random pulses more obvious. Mechanical model of the role ofsatellites in low-Earth orbit more accurate valuation of the smaller random pulse, meaningthat the regulation of orbit determination results smaller.2.Calibration of CHAMP accelerometer data to determine the random pulsecalibration of the acceleration data by time interval by an example, we can see that,according to the calibration of the acceleration data to determine the random pulseintervals, power is applied to simplify science orbit to go, you can get a better orbitdetermination results, which determine the random pulse interval for us to provide areference.3.Random pulse intervals have a significant impact on the results of a given track.4.Priori standard deviation of random pulses have a greater impact on the orbit determination results.