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Carrier Frequency Compensation Method for Flying Satellites

A technology of carrier frequency and compensation method, which is applied in the field of frequency compensation, can solve the problems of no public mature scheme and no protection in the frequency compensation method of flying satellites, so as to ensure stability and consistency, improve reliability, reduce Effect of Carrier Frequency Deviation

Active Publication Date: 2021-08-06
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flying satellites are generally single-board structures without protection, and are more significantly affected by the space environment
[0006] International research on flying satellites is still in its infancy. According to public information, only the Stardust flying satellite developed and launched by the National University of Defense Technology has successfully carried out on-orbit flight and wireless networking tests. It is suitable for flying satellites. The frequency compensation method has not yet seen a mature public solution

Method used

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  • Carrier Frequency Compensation Method for Flying Satellites
  • Carrier Frequency Compensation Method for Flying Satellites
  • Carrier Frequency Compensation Method for Flying Satellites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for compensating the carrier frequency of a flying satellite, which adjusts the carrier offset caused by component differences, comprising the following steps:

[0032] a) Select the flying satellite S as the reference flying satellite, and measure the carrier frequency value f of the reference flying satellite carrier_ref .

[0033] b) Adjust the FREQ of its radio frequency module of the flying satellite to be calibrated, FREQ is the carrier frequency configuration register value of its radio frequency module of the flying satellite, so that the carrier frequency of the flying satellite to be calibrated and the carrier frequency value f of the reference flying satellite carrier_ref unanimous. Methods as below:

[0034] b1) Use a spectrum analyzer to measure the carrier frequency value f of the radio frequency module of the flying satellite to be calibrated carrier_cal , then the crystal oscillator frequency of the flying satellite RF module to be calibrated...

Embodiment 2

[0038] A carrier frequency compensation method for flying satellites, which adjusts the carrier offset caused by temperature differences, comprising the following steps:

[0039] The flying satellites to be calibrated are all integrated with temperature sensors, which can measure the temperature of the flying satellites, and dynamically adjust the FREQ value of the RF module of the flying satellites to be calibrated according to the temperature information collected by the temperature sensors, thereby ensuring the stability of the wave frequency under different temperature conditions , the method is as follows:

[0040] a) Measure the influence of temperature on the carrier frequency

[0041] Put the flying satellite to be calibrated into a high and low temperature box, and set the test temperature range [T low ,T high ], tested in a thermal vacuum environment, and obtained the carrier frequency values ​​of the radio frequency modules of the flying satellites under different...

Embodiment 3

[0047] Components and temperature differences will cause the carrier frequency deviation of the flying satellite communication module, so a comprehensive adjustment is required.

[0048] A kind of flying satellite carrier frequency compensation method, comprises the following steps:

[0049] (1) Select the flying satellite S as the reference flying satellite, and the in-orbit steady-state operating temperature T of the flying satellite 0 The carrier frequency value f of the reference flying satellite is measured under carrier_ref .

[0050] b) at T 0 Adjust the FREQ of the radio frequency module of the flying satellite to be calibrated under the temperature, FREQ is the carrier frequency configuration register value of the radio frequency module of the flying satellite, so that at T 0 Temperature, the carrier frequency of the flying satellite to be calibrated and the carrier frequency value of the reference flying satellite f carrier_ref unanimous. Methods as below:

[0...

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Abstract

The invention provides a carrier frequency compensation method for flying satellites, which is used for reducing the carrier frequency deviation between different flying satellites and improving the reliability of space wireless networking. This method mainly corrects the carrier frequency of the flying satellite based on the two factors of device difference and temperature drift. Firstly, the carrier offset caused by the difference of components is adjusted by adjusting the configuration register of the radio frequency module. Secondly, the temperature of the flying satellite is measured by the temperature sensor, and then the carrier frequency is kept stable by dynamically adjusting the parameters of the communication module. Through the above measures, the stability and consistency of the download frequency of different flying satellites and different temperatures can be ensured, and the reliability of space networking can be improved.

Description

technical field [0001] The invention relates to a frequency compensation method suitable for on-orbit flight of flying satellites, which is used for reducing the carrier frequency deviation between different flying satellites and improving the reliability of space wireless networking. Background technique [0002] Flying satellites are satellite systems with a mass of less than 0.1Kg, usually in a plate-like structure, on which subsystems such as satellite services, communications, digital tubes, payloads, and power supplies are integrated. The application fields of flying satellites include space communication, navigation, science / exploration, telemetry perception, ground imaging, military reconnaissance, etc. [0003] With the advancement of human exploration of space, new application requirements continue to emerge. In applications that require multiple points in space and simultaneous measurement (such as large-scale spatial radiation stereoscopic detection), a large num...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04B7/185
CPCH04B7/18519H04L27/0014H04L2027/0026
Inventor 杨磊宋新赵勇樊程广陈小前陈利虎绳涛白玉铸
Owner NAT UNIV OF DEFENSE TECH
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