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Calibration system and method for pseudorange control accuracy of satellite navigation signal simulator

A technology for satellite navigation signal and pseudo-range control accuracy, which is applied in the field of satellite navigation and can solve problems such as the inability to fully meet the requirements of high-precision testing and the lack of testing methods.

Active Publication Date: 2018-06-01
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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Problems solved by technology

However, despite this, the current calibration method for detecting the pseudo-range accuracy of the satellite navigation signal simulator still cannot fully meet the high-precision testing requirements.
In addition, in the actual detection work, there is a lack of practical and feasible test methods for how to set up the motion scene of satellites and receivers in the satellite navigation signal simulator, and how to implement the relative control accuracy test of the pseudo-range.

Method used

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  • Calibration system and method for pseudorange control accuracy of satellite navigation signal simulator
  • Calibration system and method for pseudorange control accuracy of satellite navigation signal simulator

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0036] The invention provides a calibration system for the pseudorange control accuracy of a satellite navigation signal simulator, such as figure 1 shown, including:

[0037] Satellite navigation signal simulator 100, for generating radio frequency navigation signal;

[0038] Navigation signal control module 200, connected to the satellite navigation signal simulator 100, for controlling the output state of the navigation signal;

[0039] The high-speed oscilloscope 300 is used to measure the phase differenc...

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Abstract

The invention is based on the working principle of the satellite navigation signal simulator, and provides a calibration system and calibration method for the satellite navigation signal simulator pseudo range control precision. The calibration system comprises a satellite navigation simulator, a navigation signal control module, a high speed oscilloscope and a pseudo range precision analysis module; the calibration system and the calibration method set up a pseudo range precision control platform through the measurement principle of the carrier wave phase method and form a test scheme which is accurate, practical and effective. The test method can reliably and accurately detect the pseudo range control accuracy of the satellite navigation signal simulator.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to a calibration system and method for pseudorange control accuracy of a satellite navigation signal simulator. Background technique [0002] With the construction of the Beidou satellite navigation system, satellite navigation, an emerging technology, is increasingly favored by all walks of life, and satellite navigation receivers are also widely used. Since satellite navigation receivers are mainly used in the fields of navigation and aviation speed measurement, high-precision surveying and mapping, etc., the accuracy and reliability of the output measurement data are very important. The basic working principle of the satellite navigation system is: the user receives the navigation signals of no less than 4 satellites at the same time, thereby measuring more than 4 pseudo-range observations, and the relative equipment time delay between satellite coordinates, satellite clock di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 胡立志马志超张裕胥婕徐亮董莲李明来磊桑昱
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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