Research In Aerospace Electronic Reconnaissance Location Technology And Simulation Software Design

Electronic reconnaissance can be divided into communication reconnaissance,space electronic reconnaissance(satellite reconnaissance),radar reconnaissance,navigation reconnaissance,missile reconnaissance,radio reconnaissance and so on.Because of its wide-covering area,space electronic reconnaissance has been an important part of military intelligence source and command system.Therefore,problems remain in how to apply space electronic reconnaissance into the lab environment and give the accurate and real assessment,testing,optimization and validation for the system.This thesis mainly studies the analysis and simulation of radar signal interception via aerospace electronic reconnaissance system on satellite platforms.A simulation software system used for ground radar target location is developed.The thesis mainly focuses on three common location methods and compares their performances,which provides a design rule for electronic reconnaissance systems.The effective reconnaissance time via satellites supports the research of combat system.The thesis firstly presents the satellite's moving model and its key specifications.It also analyzes the relationship among satellite orbit,maximum cover area of earth,the satellite's maximum angle and the radius of view.Last but not the least,there is the analysis of the relationship between the sensitivity of the system and the reconnaissance covering area.Then,the thesis gives algorithms about single satellite two-dimensional interferometer positioning,double satellite time and frequency difference positioning and triple satellite time positioning.The corresponding location errors are also analyzed.The developed simulation software shows the location error gradient distribution graph on satellite coverage for previous three location methods.Finally,the simulation software is developed with MFC.The software completes the calculation of the sensitivity of the radiation source target's load,the receiver's sensitivity,and the gain requirements of antenna.Then it completes the evaluation analysis of the equipment reconnaissance receiving efficiency with the help of STK software,which can realize dynamic visual display of on-time covering area,and giving the reconnaissance satellite's covering duration for a certain area and covering duration for every single orbit,revisiting the report of average covering time in the cycle.In this way it completes the positioning simulation analysis.