Satellite-borne measurement and control receiver

A receiver and space-borne technology, applied in the field of telemetry and remote control, can solve the problems of how to meet high sensitivity and large ranging bandwidth, and difficulty in adapting to deep space measurement and control communication, etc., to achieve the goal of improving overall performance, scalability, and high sensitivity Effect

Active Publication Date: 2014-08-27
XIAN INSTITUE OF SPACE RADIO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The receiver design methods in the above literatures only deal with the main carrier component in the measurement and control signal, and do not propose how to meet the requirements of high sensitivity and large ranging bandwidth, so it is difficult to meet the needs of deep space measurement and control communication

Method used

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  • Satellite-borne measurement and control receiver
  • Satellite-borne measurement and control receiver

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Embodiment

[0026] A spaceborne measurement and control receiver, such as figure 1 As shown, the receiver is used for a unified carrier measurement and control system, and the receiver includes a receiving channel part and a digital processing part;

[0027] The receiving channel part includes a mixer, filter, power splitter, narrowband bandpass filter, AGC amplifier 1, wideband bandpass filter and AGC amplifier 2; the bandwidth of the wideband bandpass filter is the bandwidth of the ranging signal; the narrowband The bandwidth of the bandpass filter includes the main carrier bandwidth and the remote control subcarrier bandwidth;

[0028] After the RF signal is input and the local oscillator signal is mixed with a mixer to form a low-frequency signal, the low-frequency signal is filtered by a filter and then passed through a power divider, which divides the signal into two identical signals; one of the two signals passes through a narrowband After being filtered by the band-pass filter, ...

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Abstract

The invention relates to a satellite-borne measurement and control receiver and belongs to the technical field of remote measurement and remote control. The satellite-borne measurement and control receiver comprises a receiving channel part and a digital processing part; the receiving channel part comprises a frequency mixer, a filter, a power divider, a narrow-band band-pass filter, an automatic gain control amplifier and a wide-band band-pass filter; and the digital processing part comprises an analog digital converter and an FPGA (Field Programmable Gate Array). The satellite-borne measurement and control receiver disclosed by the invention adopts two filtering amplification branches; in a digital processing method, double A / D (Analogue / Digital) are used for sampling; a narrow branch assists a carrier synchronization method of a wide branch to obtain the high sensitivity and consider the requirements of broadband distance measurement; after a frequency Doppler and a phase of a main carrier are eliminated, and remote control demodulation and distance measurement demodulation adopt a full-digital structure to realize digital realization of a plurality of demodulation systems and distance measurement signal formats; and the whole performance and the expandability of a responder are improved.

Description

technical field [0001] The invention relates to a satellite-borne measurement and control receiver, which belongs to the technical field of remote measurement and remote control. Background technique [0002] At present, our country has developed newer detectors to detect more distant celestial bodies, including Venus, Mars, and Jupiter. The farthest distance from the moon to the earth is about 400,000 kilometers, while the furthest distance from Mars to the earth is about 400 million kilometers, which is a 1,000-fold increase in distance. Such a long distance puts forward higher requirements on the sensitivity of the on-board transponder. According to the budget, the sensitivity of the on-board transponder needs to be better than -150dBm. However, the receiving sensitivity of the transponder on the lunar satellite CE-1 / 2 already in flight has only reached -125dBm. At the same time, deep space exploration missions require a larger ranging signal bandwidth, which needs to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16H04B1/10
Inventor 吉欣张谨任经纬张宗攀朱舸
Owner XIAN INSTITUE OF SPACE RADIO TECH
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