Research On Inter-Satellite Microwave Ranging For Low-Low Satellite-to-Satellite

The Gravity Recovery and Climate Experiment (GRACE) system have adopted theK/Ka Band Ranging, The biased distance that carried out an of satellite measuresaccuracy to attain amount of micron class.This system displayed the high techniquelevel of satellite to satellite tracking， Have become the main analysis research object ofother nations. In the inter-satellite K-Band Ranging, that is key load in LL-SST gravitymeasurement technical models,the phase noise of refence to a frequency source willdecide the possible extreme limit that the system measures accuracy.The basic principle of inter-satellite microwave precision ranging have expatiatedon this thesis at first, and by analyzing the microwave range that the frequency sourcecauses to measure error, Summary and comparison flap to concuss the machine powerlaw noise of three types of the area imitate the merit and shortcoming of emulationmodel method.on the basic of that, The power law error a modeling method that putforward according to based on discrete fractional order integral. That method producesphase noise sequence the right and wrong was easy to an operation while being steadyand having dimensions constant, and being physically using under the idealcondition.Also built up microwave to measure to be apart from a system dynamic stateto imitate true model, built up microwave to measure to be apart from a system dynamicstate to imitate true model, it simulated and Verified this theories that Dual-One-WayRanging to offset the part is long term and middle from the Ultra Stable Oscillator(USO)noise in the star,use what has put forward that The power law error a modeling methodaccording to based on discrete fractional order integral. In the meantime,the paper hasanalysed in detail that range error from phase noise spectrum density differentfrequency segment and simulated The dissimilarity range accuracy to phase error levelrequest.this simulated result puts forward to the reasonable for attain micron class torange accuracy, the stability that the Ultra Stable Oscillator needs and mutually thelowest technique index sign of the phase noice, provide a certain theories basis. Thisthesis end,the applicable scheme of Inter-Satellite Microwave Ranging for LL-SST waspresented.