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Telemetry data processing method, device and system for complex satellite loads

A technology of telemetry data processing and telemetry data, which is applied in the field of remote sensing satellite information processing, and can solve problems such as being unable to adapt to changes in the definition of payload telemetry

Active Publication Date: 2020-12-15
SHANGHAI TSINGSHEN TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a complex satellite load-oriented telemetry data processing method, device and system, to alleviate the traditional telemetry data processing method in the prior art that uses fixed compression and cannot adapt to load telemetry at different design stages Defined technical issues of change

Method used

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  • Telemetry data processing method, device and system for complex satellite loads
  • Telemetry data processing method, device and system for complex satellite loads
  • Telemetry data processing method, device and system for complex satellite loads

Examples

Experimental program
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Embodiment 1

[0038] Such as figure 1 As shown, a complex satellite load-oriented telemetry data processing system provided by an embodiment of the present invention includes: a load controller applying any one of the methods in the following embodiment 2, at least one sub-load connected to the load controller ( which is figure 1 Satellite payloads in : subload 1, subload 2 and subload 3), the satellite where the load controller is located (ie figure 1 the satellite in), the ground operation and control system connected with the load controller (ie figure 1The ground operation control center in the ground operation control center), and the sub-load remote control telemetry software platform connected with the ground operation control system (ie figure 1 subload 1 remote telemetry software, subload 2 remote telemetry software and subload X remote telemetry software).

Embodiment 2

[0041] According to an embodiment of the present invention, an embodiment of a complex satellite load-oriented telemetry data processing method is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0042] figure 2 A flow chart of a complex satellite load-oriented telemetry data processing method provided by an embodiment of the present invention, such as figure 2 As shown, the method includes the following steps:

[0043] Step S101, receiving a first-type fixed-length data packet sent by at least one sub-payload;

[0044] In the embodiment of the present invention, the first type of fixed-length data packet is used to represent the telemetry data to be compressed....

example 1

[0071] Suppose there is a payload controller and 4 subloads in a certain satellite payload, image 3 The synchronization header is 2 bytes, 0xABCD (0x represents hexadecimal representation); the sub-load ID is 1 byte, and the 4 sub-loads correspond to 0, 1, 2 and 3 respectively; the ID of the load controller is 4, and the telemetry data type It is 1 byte, 0x00 represents basic telemetry, 0x01 represents extended telemetry, and the telemetry data payload is 256 bytes.

[0072] Suppose the 256-byte telemetry data payload of subload 1 telemetry data type is 0x00 is divided into:

[0073] (1) Temperature remote measurement: 1 byte, from -128 degrees Celsius to 127 degrees Celsius;

[0074] (2) Voltage remote measurement: 2 bytes, the unit is 0.1V;

[0075] (3) The remaining 253 bytes: undefined, filled with 0x55.

[0076] Assume that in orbit, the current value of the temperature remote measurement is 27 degrees Celsius, and the current value of the voltage is 5.0 volts. Most ...

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Abstract

The invention provides a telemetry data processing method, device and system for complex satellite loads, and relates to the technical field of remote sensing satellite information processing. The method is applied to a load controller and comprises the the steps of firstly, receiving a first type fixed-length data packet sent by at least one sub-load; receiving a compression reference table uploaded by a ground operation control system; compressing and combining the first type fixed-length data packet based on the compression reference table to obtain a second type fixed-length data packet; and finally, sending the second type fixed-length data packet to the ground operation control system so as to enable the ground operation control system to decompress the second type fixed-length datapacket into the first type fixed-length data packet, and updating the compression reference table based on the first type fixed-length data packet. The compression reference table is updated in real time on the basis of the first type fixed-length data packet in the ground operation control system and then uploaded to the load controller, so that the compression reference table can adapt to changes of load telemetry definitions in different design stages.

Description

technical field [0001] The invention relates to the technical field of remote sensing satellite information processing, in particular to a remote sensing data processing method, device and system for complex satellite loads. Background technique [0002] The telemetry data is the basic health data of the satellite, and the telemetry link is the channel for the downlink of the satellite telemetry data. Generally, the rate of the telemetry link is less than 10Kbps. In recent years, with the advancement of electronic technology, the functions and density of satellites have become higher and higher, the loads that can be carried on a single satellite are increasing, and the rate of telemetry data is also increasing. It is becoming increasingly important to employ a data compression method to compress telemetry data so that more effective telemetry data can be transmitted over limited telemetry links. The traditional telemetry data processing method uses a fixed compression meth...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04B7/185H04Q9/00
CPCH04B7/18513H04L69/04H04Q9/00H04Q2209/00
Inventor 王育强陈曦阳凯王浩儒陈茂良曹春燕唐海李文亮
Owner SHANGHAI TSINGSHEN TECH DEV CO LTD