一种基于运载火箭遥外测系统的天线切换器的设计

Design of Antenna Switcher based on Telemetry System of Launch Vehicle

一种基于运载火箭遥外测系统的微波天线切换器的设计。在运载火箭执行一箭多星任务时,搭载星与主星分离时,由于火箭调姿,地面测控站无法有效接收到箭上遥外测微波发射信号,天线切换器根据飞行弹道及卫星分离时间适时切换选择发射天线,使得地面测控系统始终能够接收到有效的测控信号。火箭起飞信号作为切换器控制计时的起始时间,并根据不同的搭载星发射任务装订控制切换时间。同时具有较宽的切换信号带宽及较小的转发信号功率损耗。通过与遥外测系统的对接表明,切换器能够按照既定要求完成主副天线的切换。

A microwave antenna switcher based on the launch vehicle telemetry system is proposed.When a carrier vehicle performs a multi-satellite mission with one rocket,the ground monitoring station cannot effectively receive the microwave emission signals from the remote and external measurement on the rocket due to the attitude adjustment of the rocket when the launch satellite is separated from the main star.The antenna switcher chooses the transmitting antenna according to the flight trajectory and the satellite separation time,so that the ground measurement and control system can always receive effective measurement and control signals.The rocket takeoff signal is used as the start time for the switcher to control the timing,and the switching time is controlled according to different star launch missions.It has a fairly wide switching signal bandwidth and small forwarding signal power loss.Through the docking with the remote and external measurement system,the switcher can complete the switching of the primary and secondary antennas according to the established requirements.