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Satellite-borne relay user terminal supporting SSA and SMA links

A user terminal and link technology, applied in the field of satellite communication, can solve problems such as incompatibility, achieve good compatibility, simplify calculation of pointing angles, and increase self-adaptive capabilities

Pending Publication Date: 2021-04-09
SHANDONG INST OF AEROSPACE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration meets the measurement and control requirements of the first-generation relay satellite SSA link, and cannot be compatible with the second-generation relay satellite SSA and SMA links

Method used

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  • Satellite-borne relay user terminal supporting SSA and SMA links
  • Satellite-borne relay user terminal supporting SSA and SMA links
  • Satellite-borne relay user terminal supporting SSA and SMA links

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Embodiment, a spaceborne relay user terminal supporting SSA, SMA links, such as figure 1 As shown, it includes a transceiver processing module, a wide-beam antenna module and a phased array antenna module, and each module is connected by a high-frequency cable and a low-frequency cable;

[0038] The transceiver processing module includes a baseband module, a radio frequency transceiver module and a beam pointing angle analysis module;

[0039] Baseband module: Receive the forward remote control radio frequency signal of the SSA and SMA links, process and form the forward remote control intermediate frequency signal, perform capture, tracking, demodulation processing, demodulate the remote control data and send it to the spacecraft platform;

[0040] Radio frequency transceiver module: receive the return telemetry information from the spacecraft platform, perform encoding, spread spectrum, and modulation processing, and then transmit with frequency conversion;

[0041] ...

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PUM

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Abstract

The invention discloses a satellite-borne relay user terminal supporting SSA and SMA links, and the terminal comprises a receiving and transmitting processing module, a wide-beam antenna module, and a phased-array antenna module, and all modules are connected through a high-frequency cable and a low-frequency cable. The receiving and transmitting processing module receives the forward remote control radio frequency signals of the SSA link and the SMA link, processes the signals to form forward remote control intermediate frequency signals, captures, tracks and demodulates the forward remote control intermediate frequency signals, demodulates remote control data and sends the remote control data to a spacecraft platform; return telemetry information from a spacecraft platform is received, and frequency conversion emission is carried out after encoding, spectrum spreading and modulation processing are carried out; spacecraft orbit and attitude information is received through a bus interface, and beam pointing angle calculation is completed in real time in combination with a relay star orbit; the wide-beam antenna module sends forward remote control radio frequency signals of SSA and SMA links to the receiving and transmitting processing module; and the phased-array antenna module is used for receiving the radio frequency signal and the control signal provided by the receiving and transmitting processing module and completing power amplification, space beam forming and pointing control of the link radio frequency signal.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a satellite-borne relay user terminal supporting SSA and SMA links. Background technique [0002] With the development of space-based measurement and control technology, relay user terminals have been widely used on low-orbit satellites. At present, the first-generation relay satellite system only has SSA links, and the second-generation relay satellite system includes SMA links in addition to SSA links, and the SSA and SMA links correspond to different forward remote control radio frequency signals and backward telemetry radio frequency signals. In addition, system indicators such as equivalent isotropic radiated power (EIRP) and receiving G / T value of the second-generation relay satellite system have also changed compared with the first-generation relay satellite system, especially for the SMA link, the EIRP value and G / T value are even higher. At this time, th...

Claims

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Application Information

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IPC IPC(8): H04B7/185
CPCH04B7/18517
Inventor 张伟王永董爱华张浩康峰源王晓东王春霞于常永蒋海涛
Owner SHANDONG INST OF AEROSPACE ELECTRONICS TECH