Method and system for testing DS/FH (Direct Sequence/Frequency Hopping) mixed spread frequency signal parameters

A hybrid spread spectrum and signal parameter technology, applied in transmission systems, transmission monitoring, electrical components, etc., can solve problems such as complex signal characteristics, achieve the effect of suppressing the influence of noise and interference, and accurate parameter testing

Inactive Publication Date: 2014-02-26
郝建华 +4
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Problems solved by technology

However, as a more advanced spread spectrum signal system, DS/FH combines the characteristics of frequency hopping and spread spectrum, and the signal characteristics are more complex. The test method fo

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  • Method and system for testing DS/FH (Direct Sequence/Frequency Hopping) mixed spread frequency signal parameters
  • Method and system for testing DS/FH (Direct Sequence/Frequency Hopping) mixed spread frequency signal parameters
  • Method and system for testing DS/FH (Direct Sequence/Frequency Hopping) mixed spread frequency signal parameters

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Embodiment Construction

[0028] In order to better understand the technical solution of the present invention, the implementation method of the present invention will be further described below in conjunction with the accompanying drawings. The present invention provides a DS / FH hybrid spread spectrum signal parameter testing system, which is used to realize the time-frequency parameter test of the DS / FH hybrid spread spectrum signal. Finally, the intermediate frequency signal is obtained; the data acquisition unit is used to receive the intermediate frequency signal from the inverter unit, and digitally samples the intermediate frequency signal to obtain a digital sampling sequence; the test terminal is used to receive the digital sampling sequence, and the software test system is used to complete the pending Time-frequency parameter test of the test signal. Such as figure 2 shown.

[0029] 1. Inverter unit

[0030] The main work done by the inverter unit is: receiving S-band radio frequency sign...

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Abstract

A system for testing DS/FH (Direct Sequence/Frequency Hopping) mixed spread frequency signal time frequency parameters is provided. The system comprises a frequency converter unit, an acquisition and storage unit and a test terminal. The system combines an image processing method to complete the extraction of discrete DS/FH mixed spread frequency signal time frequency parameters, and a testing method comprises the steps of carrying out time frequency analysis to a signal to be tested first, regarding the analysis result as a two-dimensional image for preservation; then processing interference signals such as noisy points, glitches and the like in the image by employing an image morphological theory; and finally testing a plurality of time frequency parameters such as frequency hopping patterns, frequency hopping rates and the like by combining the corresponding relations of image pixel positions to the time frequency parameters. According to the invention, the elimination of interference factors in the test of DS/FH mixed spread frequency signals is achieved, and indexes such as the frequency hopping patterns, the frequency hopping rates and the like that are hard to analyze by the present technology are tested. The method and the system for testing the DS/FH mixed spread frequency signal time frequency parameters can be applied to equipment detection and analysis, and signal analysis and processing of a disoperative target in communication countermeasure.

Description

technical field [0001] The invention relates to a method and a system for testing parameters of a direct spread / frequency hopping (Direct Sequence / Frequency Hopping, DS / FH) mixed spread spectrum signal. Background technique [0002] Testing technology is the guarantee for the development of modern science and technology. The famous scientist Mendeleev once said: "Without testing, there is no science." As an important branch of testing technology, electronic testing technology is a method of analyzing the system using modern electronic technology. It has the characteristics of wide testing frequency band, high testing accuracy, and good repeatability. It is a measure of a country's equipment development level and industrial modernization level. important sign. With the advancement of communication technology, the test technology has gradually developed from the original analog test equipment to digital measurement equipment. The continuous innovation of computer technology ...

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Application Information

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IPC IPC(8): H04B17/00H04B1/707H04B1/713H04B17/309
Inventor 郝建华王元钦席有猷许斌蔡毅
Owner 郝建华
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