Carrier suppression measurement method of short burst spread spectrum signal

A spread spectrum signal and carrier suppression technology, applied in radio wave measurement systems, measurement devices, satellite radio beacon positioning systems, etc. Value stabilization effect

Active Publication Date: 2016-06-01
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0003] The purpose of the present invention is: aiming at the shortcomings of high hardware cost and low measurement accuracy of the traditional method of measuring the carrier suppression degree of short burst spread spectrum signal by vector signal analyzer, a kind of carrier suppression degree measurement of short burst spread spectrum signal is designed method, which effectively solves the problem of carrier suppression degree measurement for short burst inbound spread spectrum signals in the navigation user terminal test platform

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  • Carrier suppression measurement method of short burst spread spectrum signal

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Embodiment Construction

[0018] Below in conjunction with specific embodiment and figure 1 The present invention is further described.

[0019] A method for measuring the degree of carrier suppression of a short burst spread spectrum signal, comprising the following steps:

[0020] ①Construct a navigation user terminal test platform; the navigation user terminal test platform includes test control and evaluation software, navigation signal simulator, inbound signal receiver, time-frequency reference source, and navigation user terminal;

[0021] ②The test control and evaluation software controls the satellite navigation signal simulator to broadcast outbound navigation signals;

[0022] ③ The navigation user terminal receives the navigation signal simulator and broadcasts the outbound navigation signal, and transmits the inbound short burst spread spectrum signal under the control of the test control and evaluation software;

[0023] Step ③ includes the following steps:

[0024] (301) The navigatio...

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Abstract

The invention discloses a carrier suppression measurement method of a short burst spread spectrum signal. The method comprises the steps that firstly, a navigation user terminal test platform is constructed under the laboratory conditions with a time frequency reference source time frequency signal acting as a reference; secondly, test control and evaluation software controls a satellite navigation signal simulator to broadcast an outbound navigation signal; thirdly, a navigation user terminal receives the outbound navigation signal broadcasted by the satellite navigation signal simulator and transmits an inbound short burst spread spectrum signal under the control of test control and evaluation software; and fourthly, an inbound signal receiver captures, tracks and demodulates the short burst spread spectrum signal transmitted by the navigation user terminal and acquires useful signals and leakage carrier power through precise tracking of the code loop and the carrier loop of the signal so that the carrier suppression measurement value of the short burst spread spectrum signal can be acquired. Carrier suppression measurement of the inbound short burst spread spectrum signal can be realized, and the method has the advantages of being low in cost and simple and practical.

Description

technical field [0001] The invention relates to the technical field of satellite navigation user equipment testing, in particular to a method for measuring the carrier suppression degree of short burst spread spectrum signals. Background technique [0002] The navigation user equipment test platform is used to test and evaluate the functional performance of various navigation user terminals including the first phase of Beidou-2 under laboratory conditions. At present, vector signal analyzers are generally used to measure the carrier suppression degree of the inbound short burst spread spectrum signal transmitted by the navigation user terminal. Since the power of the inbound signal transmitted by the navigation user terminal is small and the time is short, the navigation terminal The measured value of the carrier suppression degree of the transmitted signal has large jitter and low precision. At the same time, due to the use of a vector signal analyzer for measurement, the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/38
CPCG01S19/38
Inventor 陈锡春郭晓峰黄建生周雪娟田方礼何巍巍董立桥李志国
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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