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本文描述基于转发器处理系统(TPS)的全球定位系统(GPS)的要求、设计特点及其能力。该转发器处理系统是由爱格林空军基地的靶场应用联合工程办公室(RAJPO)为美军战略防御指挥(USASDC)的重返外大气层再入飞行器拦截器子系统(ERIS)计划而建立的。TPS 为 ERIS 实验计划提供目标和拦截飞行器的实时位置和速度信息。为了实现这一目的,弹载转发器提供 GPS C/A 码 L 波段到 S 波段的信号转换,并重发给地面 TPS。地面发射机(GT)网用于增加 GPS 卫星(SV)覆盖域。TPS 测量包括“伪距离和”与“伪距离和的变化率”并借助 GPS 参考接收机(RR)进行差分 GPS 修正。快速相关捕获和快速付里叶变换(FFT)技术用于满足相当严格的性能要求。设计用于动态的和弹道飞行的两种卡尔曼滤波器,来满足目标和拦截器的不同精度要求。TPS 还有其它一些功能,例如,检前记录器(用于事后分析)和动态模拟信号源(用于飞行前检查)。
This article describes the Global Positioning System (GPS) requirements, design features, and capabilities of Transponder Processing Systems (TPS). The transponder processing system was established by the Joint Venture Engineering Office (RAJPO) at Love Green AFB for the US Atmospheric Reentry Vehicle Interceptor Subsystem (ERIS) program of the US Strategic Defense Command (USASDC). TPS provides the ERIS experimental program with goals and intercepts the aircraft’s real-time position and speed information. To accomplish this, the onboard transponder provides signal conversion from the L-band to the S-band of the GPS C / A code and retransmits it to the terrestrial TPS. Terrestrial transmitter (GT) network is used to increase the GPS satellite (SV) coverage area. TPS measurements include “pseudorange sum” and “rate of change of pseudorange and sum” and differential GPS corrections with a GPS reference receiver (RR). Fast correlation capture and fast Fourier transform (FFT) techniques are used to meet the most stringent performance requirements. Two Kalman filters are designed for dynamic and ballistic flight to meet the different accuracy requirements of targets and interceptors. TPS has other features such as pre-registration (for post-analysis) and dynamic analogue signal sources (for pre-flight inspection).