Emulational USB intermediate frequency responser used for satellite test and control

Abstract

The invention discloses an emulational USB intermediate frequency responser used for satellite test and control. The emulational USB intermediate frequency responser used for the satellite test and control consists of a front-end analog-to-digital converter, a digital down-conversion module, a carrier synchronization module, a demodulation filter module, a forwarding modulation module and an output analog-to-digital converter; the connecting relations and the signal flow paths are that: an output signal of the front-end analog-to-digital converter enters the digital down-conversion module for processing; the output of the digital down-conversion module is processed in the carrier synchronization module; an output signal of the carrier synchronization module enters the demodulation filter module for processing; one output signal obtained by the demodulation filter module is remote subcarrier output of a demodulator; the other signal is a ranging signal; the ranging signal enters the forwarding modulation module for processing; and the output signal of the forwarding modulation module enters a digital-to-analog converter; and the output of the digital-to-analog converter is an intermediate frequency output signal of the responser. The emulational USB intermediate frequency responser has high stability, low design complexity, high compatibility, a practical value and an application prospect.

Description

(1) Technical field [0001] The invention relates to a satellite measurement and control transponder, in particular to an intermediate frequency emulation digital transponder used in a unified S-band (“unified S-band” or Unified S-Band, hereinafter referred to as “USB”) measurement and control system. (2) Background technology [0002] With the development of the aerospace industry, the measurement and control systems of spacecraft such as high-orbit satellites, geostationary satellites, and spaceships require long range, high precision, multiple functions, and high reliability. The interference is serious and the operating distance is limited, which cannot meet the new measurement and control requirements. In this context, a unified carrier measurement and control system integrating tracking orbit measurement, telemetry and remote control is proposed. [0003] The so-called unified carrier measurement and control system refers to a comprehensive radio measurement and contro...

AI Technical Summary

Problems solved by technology

For a long time, domestic USB answering machines have been implemented with a large number of analog and discrete components, which have the disadvantages of loose device structure, duplication of resources, complex interface, difficult debugging and maintenance, large size and power consumption, etc.

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