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Miniaturized satellite data transmission equipment

A technology for satellite data transmission and equipment, applied in digital transmission systems, transmission systems, radio transmission systems, etc., can solve problems such as limited space and energy, reduced transmission rate and transmission quality, and small satellite platforms, to simplify processing, increase Reliability, the effect of reducing the use of components

Active Publication Date: 2020-02-07
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small satellites have their own characteristics and limitations. The satellite platform is small, and the space and energy provided are limited, but its transmission rate and transmission quality have not been reduced.

Method used

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  • Miniaturized satellite data transmission equipment
  • Miniaturized satellite data transmission equipment

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Embodiment Construction

[0014] Below, combine figure 1 with figure 2 The present invention is further described.

[0015] Such as figure 1 The miniaturized low-cost satellite data transmission equipment of the present invention includes a power supply unit 1, a digital processing unit 2, a local oscillator 3, a modulator 4, a temperature compensation attenuator 5, a bandpass filter 6, a first isolator 7, a boost amplifier 8, The final stage amplifier 9, the wave detector 10 and the second isolator 11; the digital processing unit 2 receives I and Q two-way data, performs framing, scrambling and encoding processing to generate two-way digital baseband signals, and outputs them to the modulator 4; The local oscillator 3 generates a radio frequency local oscillator signal and outputs it to the modulator 4; the modulator 4 modulates two digital baseband signals to the radio frequency according to the local oscillator signal and outputs it to the temperature compensation attenuator 5; the temperature co...

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Abstract

The invention discloses a low-cost miniaturized satellite data transmission device, which comprises a digital signal processing unit, a local oscillator circuit, a modulator, an amplifier, a cavity filter, a power amplifier, an isolator and a power supply unit. The invention involves space-borne CCSDS coding technology and modulation amplification technology. Firstly, the received high-speed data is buffered for receiving data, and then the buffered data is framed, scrambled, LDPC coded, framed again after coding, and output data is buffered. High-speed data serial output, X-band analog modulation is performed on the output I and Q data, the modulated signal is filtered, two-stage power amplification is output through the isolator, the invention has simple design, high reliability, compact structure, It is suitable for low-cost, small-scale satellite data transmission equipment.

Description

technical field [0001] The invention relates to the field of satellite data transmission equipment, and is suitable for the application of satellite data transmission equipment with miniaturization, high integration and low cost. Background technique [0002] At present, one of the development trends of remote sensing satellites is to expand to a series of small satellites and microsatellites with relatively single functions, short development time, and low funding requirements. Small satellites have their own characteristics and limitations. The satellite platform is small, and the space and energy provided are limited, but its transmission rate and transmission quality have not been reduced. This puts forward higher requirements for the technical level of the on-board equipment, which must not only transmit high-speed data with high quality, but also have the characteristics of small size, light weight, low power consumption, and low cost. Therefore, the use of miniaturiz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04B1/403H04B1/00H04L1/00
CPCH04B1/0035H04B1/0039H04B1/0042H04B1/403H04B7/18515H04L1/0063H04L1/0083
Inventor 高鹏李聪李胜利王志成孔繁青
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP