A distance zero value calibration method and system based on the integration of measurement, control and digital transmission

Abstract

The invention discloses a distance zero-value calibration method and system based on integration of measurement, control, and data transmission. The method comprises: determining a reset pulse per second according to a system clock, a spread spectrum pseudo code frequencies of a non-coherent spread spectrum system, and a symbol rate of a measurement, control, and data transmission integration system after high-speed transmission frame coding; on the basis of the reset pulse per second, determining an uplink time enabling pulse of the non-coherent spread spectrum system and an uplink time enabling pulse of a high-speed transmission frame; and carrying out accurate alignment on the uplink time enabling pulse of the non-coherent spread spectrum system and the uplink time enabling pulse of thehigh-speed transmission frame to enable transmitting delays of ground station equipment to be equal, and realizing distance zero-value separation of a responder by using a zero calibration frequencyconverter. Therefore, a problem that the distance zero values of the responder can not be separated directly when the uplink and downlink radio-frequency characteristics are different is solved; and the effective, simplified, and reliable task requirement of the distance zero value separation method is met.

Description

technical field [0001] The invention belongs to the technical field of satellite measurement and control and communication, and in particular relates to a distance zero value calibration method and system based on the integration of measurement, control and digital transmission. Background technique [0002] The integrated measurement, control and digital transmission transponder is compatible with two measurement and control systems: non-coherent spread spectrum and measurement, control and digital transmission integration. Among them, the integrated system of measurement, control and data transmission is mainly used in the measurement and control subsystem to establish reliable and stable telemetry, remote control, distance measurement and speed measurement and high-speed data transmission links between satellites and ground. [0003] When the transponder works under the integrated system of measurement, control and data transmission, the uplink receives 1 channel of remot...

AI Technical Summary

Problems solved by technology

[0005] The technical problem of the present invention is to overcome the deficiencies of the existing technology, and provide a distance zero value calibration method and system based on the integration of measurement, control and data transmission, aiming at solving the problem of distance zero value calibration of the integrated transponder when the uplink and downlink radio frequency characteristics are different. Problems where values ​​cannot be directly separated

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