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Frequency conversion link bit error rate calibration device for satellite radio frequency testing system

A radio frequency test system and frequency conversion link technology, applied in the field of special test equipment calibration, can solve problems such as the inability to calibrate the bit error rate, and achieve the effect of improving accuracy

Inactive Publication Date: 2015-06-17
SHANGHAI PRECISION METROLOGY & TEST RES INST
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  • Abstract
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Problems solved by technology

The bit error rate test of the satellite radio frequency test system is completed in the state of digital modulation signal, so the traditional bit error rate calibration method cannot be used

Method used

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  • Frequency conversion link bit error rate calibration device for satellite radio frequency testing system

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The preferred embodiments of the present invention are only used to help explain the present invention and are not intended to limit the protection scope of the present invention. The preferred embodiments of the invention are not exhaustive in all detail, nor do they limit the invention to the described specific implementations. Obviously, many modifications and variations can be made based on the contents of this specification. This description selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can make good use of the present invention. The invention is to be limited only by the claims, along with their full scope and equivalents. After reading the contents of the present invention, those skilled in the art can make various changes or modif...

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Abstract

The invention discloses a frequency conversion link bit error rate calibration device for a satellite radio frequency testing system, which comprises an arbitrary waveform generator, a radio frequency signal source, a calibrated satellite radio frequency testing system, a spectrum analyzer, an oscilloscope and a computer, wherein the computer comprises demodulation software; and each of the arbitrary waveform generator and the oscilloscope has two channels. A comparison method is adopted for calibrating the bit error rate, that is, the spectrum analyzer, the oscilloscope and the computer are used for composing the bit error rate calibration device, and the tested and obtained bit error rate result is compared with a calibrated instruction receiver to complete bit error rate calibration. The problem that the frequency conversion link bit error rate for the satellite radio frequency testing system at a low bit rate and in a BPSK modulation state in the prior art cannot be measured can be solved, and measurement accuracy is improved at the same time.

Description

[0001] technical field [0002] The invention relates to the field of calibration of special test equipment, in particular to a bit error rate calibration device for a frequency conversion link of a satellite radio frequency test system. [0003] Background technique [0004] The satellite radio frequency test system is an important part of the satellite ground test. It is mainly used for the data transmission sub-system, forwarding sub-system and forwarding sub-system of the satellite in various large-scale tests such as the docking test of each sub-system, the whole satellite electric joint test, the vacuum thermal test and the launch site test. It is a very representative satellite test equipment for testing the wired and radio performance of the system and the measurement and control subsystem. In order to ensure the accuracy and reliability of the test results, the transmission quality of the signal in the RF test system should be guaranteed first, that is, the dist...

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Application Information

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IPC IPC(8): H04B17/40H04B17/21
Inventor 邓倩岚辛康任黎丽
Owner SHANGHAI PRECISION METROLOGY & TEST RES INST
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