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High-reliability measurement and control data transmission channel multiplexing method and system for deep space probe

A deep space detector and channel multiplexing technology, applied in the field of deep space detection, to achieve the effect of improving reliability

Active Publication Date: 2022-01-28
SHANGHAI AEROSPACE COMP TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing downlink channel multiplexing methods and systems do not have the above functions, and it is necessary to design a new measurement and control data channel multiplexing method for the needs of deep space exploration

Method used

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  • High-reliability measurement and control data transmission channel multiplexing method and system for deep space probe
  • High-reliability measurement and control data transmission channel multiplexing method and system for deep space probe
  • High-reliability measurement and control data transmission channel multiplexing method and system for deep space probe

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Embodiment 1

[0033] Such as figure 1 As shown, the present invention provides a highly reliable measurement and control data transmission channel multiplexing method for deep space probes, which realizes the downlink channel data multiplexing management function of the probes. The managed equipment and its measurement and control data types include landers TT&C data, orbiter TT&C data, payload controller data transmission data, etc., the downlink frame formats of various equipment are shown in Table 1 and Table 2, where the lander TT&C data and orbiter TT&C data adopt the frame format shown in Table 1, The data transmission data of the load controller adopts the format shown in Table 2. The frame header information bit design adopted by frame formats 1 and 2 is shown in Table 3, where:

[0034] Frame length bit: supports two frame lengths, 0 is 224 bytes frame length, 1 is 896 bytes frame length;

[0035] Priority range: 16 levels from 0 to 15 are supported, among which 0 is the highest ...

Embodiment 2

[0054] see figure 2 , this embodiment provides a high-reliability measurement and control digital transmission channel multiplexing system for deep space detectors based on Embodiment 1, including: a frame header information register, a data FIFO module, a write management module, a startup management module, Downstream management module.

[0055] The hardware of this embodiment mainly includes an antifuse FPGA, and the AX2000-1CQ352M chip of ACTEL Company can be selected.

[0056] The frame header information register is used to receive the information contained in the frame header of the cached downlink frame (frame length bit, priority bit, transmission rate bit, special service bit). After the information is cached, it can be used at any time and multiple times. In the next Overwrite when frame is written;

[0057] The data FIFO module is used to cache other data in the downlink frame except the frame header;

[0058] The write management module is used to control spec...

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Abstract

The invention discloses a high-reliability measurement and control data transmission channel multiplexing method for a deep space probe. The method comprises the steps of: S1, arranging a channel downlink frame according to a specific format, and transmitting the downlink frame to a channel multiplexing unit; S2, caching frame header information in a frame header information register, and caching subsequent effective data in an FIFO (First In First Out); S3, analyzing the information in the register by the channel multiplexing unit, and sending a starting signal to a backward multiplexer; S4, after the response of the multiplexer is obtained, reading out data in the register and the FIFO by the channel multiplexing unit according to the reading rates of the transmission rate bit configuration information register and the FIFO and the input sequence to reform complete downlink frame data, and outputting the complete downlink frame data; S5, rewriting a specific data bit of the downlink frame according to a special service bit; and S6, repeating the steps. Correspondingly, the invention further discloses a system based on the method. According to the invention, reliable transmission with high real-time performance and low transmission rate on a deep space wireless channel is realized.

Description

technical field [0001] The invention relates to the technical field of deep space detection, in particular to a method and system for multiplexing channels of high-reliability measurement and control data transmission for deep space detectors. Background technique [0002] The downlink channel multiplexing management function is an important function of the spacecraft data management system, which realizes the time-division multiplexed transmission of data sent by different devices on the probe to the downlink channel. The types of data sent by different devices on the detector are different. Generally speaking, they are divided into two categories: measurement and control data and data transmission data: measurement and control data frames are usually the working status data of the detector, and the amount of data contained is small, but The data content is important, requiring high real-time performance and reliable transmission at low transmission rates on deep space wire...

Claims

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Application Information

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IPC IPC(8): H04L69/06H04L47/50H04L47/6275H04L1/00H04L43/0852H04L43/0823
CPCH04L69/06H04L47/6245H04L47/6275H04L1/0002H04L1/0007H04L43/0852H04L43/0847Y02D30/70
Inventor 罗唤霖孙垒张旭光杨鹿张甜甜
Owner SHANGHAI AEROSPACE COMP TECH INST
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