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Method for improving power efficiency of TDRSS transponder

A technology of power efficiency and transponder, applied in the shaping network, advanced technology, baseband system components and other directions in the transmitter/receiver, it can solve the problems of complex equalization algorithm, blind equalization algorithm, failure to pass the training sequence, etc., to achieve Effect of improving power efficiency and prolonging power supply life

Inactive Publication Date: 2012-08-01
CHONGQING UNIV
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AI Technical Summary

Problems solved by technology

For TDRSS, the information sent by aircraft or satellites is generally unknown, so the equalization algorithm cannot be implemented through the training sequence. will be complicated

Method used

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  • Method for improving power efficiency of TDRSS transponder
  • Method for improving power efficiency of TDRSS transponder
  • Method for improving power efficiency of TDRSS transponder

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Embodiment Construction

[0025] In order to better understand the present invention, specific embodiments of the present invention will be described in detail below.

[0026] attached figure 1 The adaptive power control process based on multi-vehicle DBF pointing deviation and transponder optimal power efficiency is shown:

[0027] A. The 30-way antenna elements of relay satellite pre-processing (1) receive the signals of M aircraft in the air, and then provide them to the transponder for high-power amplification (2) after amplification, FDM synthesis, and frequency conversion processing.

[0028] B. Given the operating point of the transponder's high-power amplification (2), transmit the FDM signals of N array elements to the ground with high power at a certain power efficiency.

[0029] C. The main functions of the ground pre-processing (3) of the TDRSS ground terminal receiving station are to complete signal reception, low-noise amplification, down-conversion and N-way FDM signal separation. The F...

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Abstract

The invention discloses an adaptive power control method for improving the power efficiency of a transponder of TDRSS (tracing and data relay satellite system) based on subsatellite DBF (digital beam forming). In the method, an adaptive equalizer is added in a TDRSS reverse link, weight coefficient of a transversal filter of the equalizer is adaptively trained by adopting DBF direction deviationsof multiple air vehicles so as to eliminate the influence of cross interference caused by nonlinearity of a high-power amplifier of a satellite transponder on N-path frequency division multiplexing array element signals of the reverse link, and improve the subsatellite DBF direction accuracy of the air vehicle; and in the case that the DBF direction accuracy of the air vehicle is fulfilled, the influence of cross-interference on the array element signals can be eliminated by an adaptive equalization algorithm, and operating points of the high-power amplifier of the satellite transponder is dynamically adjusted, so that the operating points approach the nonlinear saturated region to the greatest extent, and the high-power amplifier of the transponder can transmit signals in the best power efficiency to improve the power efficiency of the transponder and prolong the service life of the power supply of TDRSS.

Description

technical field [0001] The present invention relates to TDRSS (Tracking and Data Relay Satellite System), more particularly, relate to a kind of self-adaptive that eliminates the intermodulation interference that TDRSS transponder high-power amplifier produces to multi-vehicle sub-satellite DBF (Digital Beam Forming) pointing accuracy influence Equalization method to enable transponder high power amplifiers to transmit signals adaptively with optimum power efficiency. Background technique [0002] TDRSS has played an extremely important role in the development of space technology with its high coverage, high data rate and multi-target measurement and control capabilities, and has been highly valued by countries all over the world. [0003] The reverse link of TDRSS is an information transmission channel that transmits telemetry data from the user satellite to the ground station, and it can transmit the measurement and control information of multiple users (aircraft, user sat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04B7/185
CPCH04B7/18515Y02D30/70
Inventor 谭晓衡曾孝平胡友强王雪萍曹海林甘平朱斌李腾蛟胡洋刘煜
Owner CHONGQING UNIV
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