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High-precision and high-frequency sampling programmable telemetry method based on sub-packet telemetry

A high-frequency, high-precision technology, applied in the field of satellite subcontracting telemetry, which can solve problems such as low flexibility and telemetry that cannot be changed at any time.

Active Publication Date: 2018-11-23
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

[0002] Traditional satellite models mainly use the PCM telemetry system, and usually use the main and sub-frame format or the floating combination format to arrange the medium and low-speed telemetry data on the satellite to the fixed position of the telemetry format at different frequencies. Due to the limitation of this static arrangement method , the telemetry cannot change at any time with the dynamic situation of the satellite’s in-orbit operation, and the flexibility is not high

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  • High-precision and high-frequency sampling programmable telemetry method based on sub-packet telemetry
  • High-precision and high-frequency sampling programmable telemetry method based on sub-packet telemetry
  • High-precision and high-frequency sampling programmable telemetry method based on sub-packet telemetry

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[0028] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0029] In this embodiment, the high-precision and high-frequency sampling programmable telemetry method based on packet telemetry provided by the present invention includes the following steps:

[0030] Step S1: Predefine a telemetry source package, assign an idle application process identifier to the telemetry source package, and set the default transmission status, transmission cycle, sampling accuracy, and number of sampling channels of the telemetry source package;

[0031] Step S2: Cal...

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Abstract

The invention provides a high-precision high-frequency sampling programmable telemetering method based on packet telemetry, comprising the steps of predefining a telemetry source packet, assigning an idle application identifier to the telemetry source packet, and setting default transmission state, transmission cycle, sampling precision and sampling channel quantity of the telemetry source packet; calculating satellite telemetry frame resources used by a telemetry parameter in each sampling channel according to the sampling precision; initializing sampling address of the telemetry source packet according to the sampling channel quantity; calculating sampling frequency of the telemetry parameter, wherein the sampling frequency of one telemetry parameter depends on download cycle of the telemetry source packet and the number of times of the telemetry parameter being acquired in the telemetry source packet; it is possible to quickly finish on-board programming and download a specified telemetry parameter in the case of abnormal fluctuations in satellite energy, satellite attitude related telemetry, busbar voltage and current and the like.

Description

technical field [0001] The invention relates to satellite packet telemetry technology, in particular to a high-precision and high-frequency sampling programmable telemetry method based on packet telemetry. Background technique [0002] Traditional satellite models mainly use the PCM telemetry system, and usually use the main and sub-frame format or the floating combination format to arrange the medium and low-speed telemetry data on the satellite to the fixed position of the telemetry format at different frequencies. Due to the limitation of this static arrangement method , telemetry cannot change at any time with the dynamic situation of the satellite's in-orbit operation, and its flexibility is not high. [0003] As the autonomy and randomness of on-board information sources become stronger and stronger, many application processes can generate data packets, and different application process source packets have different data occurrence rates and packet lengths, which requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00H04B7/185
CPCG16Z99/00H04B7/18519H04B7/18586
Inventor 范颖婷朱振华王军旗顾强肖轩刘云峰
Owner SHANGHAI SATELLITE ENG INST
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