Spacecraft measurement and control responder capture time index test system and method

The invention provides a spacecraft measurement and control responder capture time index test system and method, and the method comprises the steps: transmitting an uplink intermediate frequency remote control signal generated by measurement and control baseband equipment to an up-converter, converting the uplink intermediate frequency remote control signal into an uplink remote control signal through the up-converter, and transmitting the uplink remote control signal to an uplink radio frequency link; the uplink radio frequency link attenuating the power of the uplink remote control signal and sending the uplink remote control signal to the spacecraft measurement and control transponder; the downlink radio frequency link receiving a downlink telemetry signal sent by the spacecraft measurement and control responder, attenuating the downlink telemetry signal and sending the attenuated downlink telemetry signal to the down converter; the down converter performing down conversion on the attenuated downlink telem