Micro/nano satellite measure and control communication integral transmitting and receiving system and realization method thereof

A transceiver system and micro-nano satellite technology, applied in the field of aerospace information, can solve the problems of small size, low cost of on-board equipment, and can not be used, so as to achieve the effect of improving anti-interference ability, reducing the number of interfaces, and improving reliability

Inactive Publication Date: 2012-01-25
BEIHANG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Due to the small size and limited power supply capacity of on-board batteries, micro-nano satellites require high integration and low power consumption of

Method used

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  • Micro/nano satellite measure and control communication integral transmitting and receiving system and realization method thereof
  • Micro/nano satellite measure and control communication integral transmitting and receiving system and realization method thereof
  • Micro/nano satellite measure and control communication integral transmitting and receiving system and realization method thereof

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Embodiment

[0041] Such as Figure 1-5 As shown, the present invention provides a micro-nano satellite measurement and control communication integrated transceiver system, including: a transceiver terminal, a radio frequency front-end module, and an intermediate frequency baseband signal processing module.

[0042] The transceiver terminal is used to send and receive radio frequency signals, including satellite-to-ground receiving antenna 11, satellite-to-ground transmitting antenna 12, inter-satellite antenna 13, and inter-satellite antenna 14;

[0043] The RF front-end module 2 includes: satellite-to-earth RF module 21, satellite-to-earth RF module 21, used to complete signal transmission between the main satellite and the ground, including satellite-to-earth RF receiving channel 211, satellite-to-earth RF transmitting channel 212, and satellite-to-earth RF The receiving channel 211 is used to perform analog frequency down processing on the received radio frequency signal to form an intermedi...

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Abstract

The invention discloses a micro/nano satellite measure and control communication integral transmitting and receiving system and a realization method thereof. The method comprises the following steps: 1) uplink signal processing: 11) receiving and processing radio-frequency signals to obtain analog intermediate-frequency signals; and 12) carrying out analog to digital conversion and digital underlocking on the analog intermediate-frequency signals and dividing into two paths of uplink digital intermediate-frequency signals, namely, one path of the signals is sent to a satellite-mounted computer by QPSK (quadrate phase shift keying) demodulation and uplink protocol processing so as to finish uplink data transmission, and the other path of the signals is subjected to the PM (phase modulation) demodulation to obtain side sound signals and PSK (phase shift keying) remote signals, and the PSK remote signals are subjected to BPSK (binary phase shift keying) demodulation to convert into a remote control command which is sent to the satellite-mounted computer so as to finish the remote control; and 2), downlink signal processing: 21), acquiring two paths of data from the satellite-mounted computer and a storage unit, namely, one path of data which is subjected to downlink protocol processing, BPSK modulation, combination with the side sound signals and downlink measure and control carrier PM modulation is combined with the other path of data which is subjected to the downlink protocol processing and the QPSK modulation to enter a satellite-ground radio-frequency emission channel; and 22) converting into radio-frequency signals to finish the remote measure and the downlink data transmission.

Description

Technical field [0001] The invention relates to aerospace information technology, in particular to a software radio-based micro-nano satellite measurement, control and communication integrated transceiver system and an implementation method thereof. Background technique [0002] At present, more mature analog circuits are usually used to realize the front-end circuits of up-conversion, down-conversion, modulation and demodulation in the measurement and control communication transceiver. The system volume, weight, and power consumption are all large, which are all related to volume, weight, and power consumption. It is disadvantageous for the more demanding spaceborne system. Regarding the digital realization of satellite measurement and control communication systems, there have been few published research results at home and abroad in recent years, and basically the technical route of designing digital-analog hybrid ASIC (application-specific integrated circuit) is adopted. Due ...

Claims

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Application Information

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IPC IPC(8): H04L27/22H04B7/185G08C17/02
Inventor 张涛张军蒯潇唐树元卢咏
Owner BEIHANG UNIV
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