High precision single point positioning system of single frequency global positioning system (GPS) and method

A precision single-point positioning and single-point positioning technology, which is applied in the field of GPS positioning, can solve the problems of unsuitable promotion, failure to meet the requirements of the working distance, and expensive dual-frequency receivers, etc., so as to reduce project costs, improve feasibility and flexibility , the effect of broad industrialization prospects

Active Publication Date: 2012-07-04
重庆九洲星熠导航设备有限公司
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Problems solved by technology

However, the pseudo-range differential positioning can only provide sub-meter positioning accuracy. If the RTK function is used, the operating range generally does not exceed 15 kilometers, so

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  • High precision single point positioning system of single frequency global positioning system (GPS) and method
  • High precision single point positioning system of single frequency global positioning system (GPS) and method
  • High precision single point positioning system of single frequency global positioning system (GPS) and method

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Embodiment Construction

[0030] Such as figure 1 As shown, a single-frequency GPS high-precision point positioning system is composed of an antenna 101 , a GPS receiver 102 , a wireless communication module (GPRS) 103 , an ARM core board 104 , a motherboard 105 , a power supply 106 and a data interface 107 .

[0031] The antenna 101 is used to receive the signal of the GPS satellite navigation system;

[0032] The single-frequency GPS receiver 102 mainly completes GPS baseband signal processing, GPS signal tracking and PVT (position, velocity, time) solution, and provides required GPS observation data (satellite ephemeris data) to the precision single point positioning solution module , pseudo-range observations, carrier phase observations, etc.), SBAS observation data (GPS satellite ephemeris error correction, satellite clock correction and ionospheric correction information, etc.).

[0033] The wireless communication module (GPRS) 103 mainly completes the reception of various correction data (incl...

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Abstract

The invention provides a high precision single point positioning system of a single frequency global positioning system (GPS) and a method, which belong to the technical field of GPS positioning. The positioning system is provided with a single frequency GPS receiver which finishes the processing of a GPS baseband signal, tracing of a GPS signal and pressure-volume-temperature (PVT) resolving and provides required GPS observation data and various error correcting information for a precision single point positioning solving module. The receiving of various correction data and loading of information of international GPS service (IGS) precise ephemeris, clock error, ionospheric delay and the like are finished by wireless communication module general packet radio service (GPRS) through wireless networks. The wireless communication module GPRS performs ionospheric delay error correction, satellite clock error correction and satellite track error correction, and utilizes IGS network data to finish precision single point positioning processing. An ARM core plate receives various observation data, satellite-based augmentation system (SBAS) observation data and various correction data of the wireless communication module and performs automatic processing computing of precision single point positioning algorithm. The single frequency GPS high precision single point positioning system and the method have the advantages of being simple in data collection and high in precision, and the feasibility and flexibility of the precision positioning are improved.

Description

technical field [0001] The invention relates to the technical field of GPS positioning, in particular to a single-frequency GPS high-precision single-point positioning system and method. Background technique [0002] Since the establishment of GPS in 1993, satellite positioning technology has been widely used in navigation, measurement, timing, space technology, etc., and has become the third new growth point of IT after communication and Internet. GPS positioning methods are divided into relative positioning and absolute positioning. The latter is also called single point positioning. Since GPS was put into use, its relative positioning positioning method has developed rapidly. From the first code relative positioning to the current RTK positioning, the positioning accuracy of GPS has been continuously improved. However, the development of absolute positioning, that is, single-point positioning, is relatively slow. Traditional GPS single-point positioning is carried out by...

Claims

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Application Information

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IPC IPC(8): G01S19/43
Inventor 不公告发明人
Owner 重庆九洲星熠导航设备有限公司
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