FY-2C星应答机子系统技术改进

阐述了风云二号(FY-2)C星测控分系统应答机子系统的功能,以及载频中心频率、工作体制、接收机输入信号电平、馈线损耗、发射性能和功耗等主要技术指标.给出了子系统的组成和工作原理.介绍了C星应答机的倍频链电路、调制器、选用固态功率放大器(SSPA),以及功率合成器放电余量增大等设计改进.试验验证及在轨运行状况表明,C星应答机工作正常,所作技术改进正确有效.

Technology Upgrade of the Responder Subsystem for FY-2C Meteorological Satellite

The function of the responder of telemetry and control subsystem for FY-2C meteorological satellite was introduced in this paper.And so were the major performances such as central frequency of carrier,operation pattern,input signal level of receiver,feeding line loss,transmit feature,and power consumption.The composition and principle of the responder were given.The technology upgrade of the responder,such as change of multiple frequency link circuit and modulator,adoption of solid state power amplifier,and discharge increment of power synthesizer was presented.The test approval and on-orbit flying showed that the responder operation of C satellite was normal,which meant the improvements were correct and effective.