Measurement and control communication ground station emission unidirectional distance zero value range finding system based on time base

Abstract

The invention discloses a measurement and control communication ground station emission unidirectional distance zero value range finding system based on a time base, and aims to provide a zero-value ranging system with few error links and high zero-value measurement precision. The zero-value ranging system is realized by the following technical scheme: a time base unit outputs synchronous clock signals to a baseband modulator unit and an optical transmitter respectively; the synchronization signal is triggered to generate an uplink ranging signal, and the uplink ranging signal passes through the beam forming unit, the T assembly and the array antenna and then transmits a radio frequency ranging signal; the optical transmitter converts the synchronization signal into an optical signal and transmits the optical signal to the optical receiver; the calibration antenna sends the received radio frequency ranging signal and the synchronization signal received by the optical receiver to an oscilloscope, and the oscilloscope measures the time delay of the transmitted signal based on the synchronization signal; and the spatial distance between the array antenna and the calibration antenna, the time delay of calibration equipment and the time delay difference of synchronous signals of the baseband modulator and the optical receiving module are measured, the measurement of the transmittingone-way time delay is finished, and thus calculating the emission unidirectional distance zero value.

Description

technical field [0001] The invention belongs to the transmission one-way zero-value measurement technology in the field of aircraft measurement and control communication, and in particular relates to a time-base-based measurement and control communication ground station transmission one-way zero-value range measurement system. [0002] technical background [0003] During the operation of satellites, spaceships, missiles and other aircraft, the ground station of measurement and control communication needs to measure and locate its position relative to the ground station, and then the ground station of measurement and control communication sends remote control commands to the aircraft and receives the information issued by the aircraft. Telemetry information, so that the aircraft can play its true effectiveness. The TT&C and communication of the continuous wave system aircraft in service are inseparable from the corresponding TT&C communication ground station. A ground statio...

AI Technical Summary

Problems solved by technology

In fact, in the application process of ground equipment, some problems have been exposed that the measurement error affects the accuracy

The main sources of these measurement errors are: (1) The inconsistency between the test link and the actual working link introduces measurement errors

(2) The accuracy of the measuring equipment is low, resulting in the measurement accuracy not meeting the requirements, etc.

However, the equipment composition and circuit form of the actual receiving link and the transmitting link are completely different. This method of directly dividing the zero value of the transmission and reception distance of the device leads to an error of about 10m to 50m in the one-way distance zero value of the device, which cannot meet the high precision of the order of 1m. Requirements for equipment distance zero measurement

Images