Real-time precision single-point positioning based satellite navigation device and method

A precise single-point positioning and satellite navigation technology, applied in measurement devices, satellite radio beacon positioning systems, instruments, etc. The effect of anti-multipath and increasing the number of observation satellites

Inactive Publication Date: 2018-06-22
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-system full-frequency point receiver compatible with the Beidou-3 new system signal needs to have the real-time observation capability of 800 channels, and the configuration of a miniaturized single-baseband signal processing board is difficult to achieve

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  • Real-time precision single-point positioning based satellite navigation device and method
  • Real-time precision single-point positioning based satellite navigation device and method
  • Real-time precision single-point positioning based satellite navigation device and method

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0020] The satellite navigation positioning device provided by the invention includes a satellite navigation receiver and a set of antennas.

[0021] The antenna is used to receive satellite signals, convert electromagnetic wave signals into high-frequency electrical signals, and transmit them to satellite navigation receivers through antenna cables.

[0022] The satellite navigation receiver down-converts the high-frequency electrical signal to form an analog intermediate-frequency signal, which is quantized and converted by A / D to form a digital intermediate-frequency signal. After baseband demodulation, the original observation data is generated and provided to the main control unit for positioning processing. The satellite navigation receiver is mainly composed of a rad...

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Abstract

The invention provides a real-time precision single-point positioning based satellite navigation device and method. A satellite navigation receiver receives satellite signals, performs down-conversionand sends into an intermediate-frequency signal preprocessing unit to complete A / D conversion, and the digital intermediate-frequency signals subjected to interference suppression are sent into a baseband signal processing unit for signal capturing and tracking to complete original observation data extraction and original navigation message demodulation. A master control unit comprehensively processes original observation data and navigation messages to obtain observation data and broadcast ephemeris through analysis; in addition, IGS center satellite orbit parameters and satellite clock errors are acquired in real time through the network, performing data preprocessing, space-time datum unifying and positioning model establishment, adopting a Kalman filter method for real-time precisionpositioning, storing a positioning result, and transmitting to a display control unit to display. The device and the method have advantages that cost saving is realized, operating efficiency can be improved, distance restraining is avoided, and independent completeness and precision of a positioning system can be remarkably improved.

Description

technical field [0001] The invention belongs to the field of high-precision non-difference positioning of satellite navigation, relates to BDS, GPS and GLONASS systems, in particular can receive Beidou-3 global new system signals, and can be used for generating single-point high-precision positioning information of satellite navigation systems. Background technique [0002] In traditional GPS static positioning, the absolute positioning accuracy of a single satellite navigation receiver is about 10m, which cannot meet the needs of precise navigation and measurement users. Generally, relative positioning is used to eliminate receiver clock error and satellite positioning by forming double-difference observations. Public errors such as clock error and weakening the influence of highly correlated errors such as tropospheric delay and ionospheric delay to achieve the purpose of improving accuracy. This observation method does not need to consider complex error models, and has th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/24G01S19/44
CPCG01S19/24G01S19/44
Inventor 田宇关红宾蒋军李路程
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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