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Tracking system and method for improving satellite pseudo range precision

A tracking system and satellite pseudorange technology, applied in the field of communications, can solve the problems of complex circuit structure, large space occupation, high power consumption, etc., and achieve the effect of fast acquisition speed, simple structure, and improved pseudorange accuracy.

Active Publication Date: 2015-11-18
COMNAV TECH
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Problems solved by technology

However, although the generation of this scheme improves the accuracy of the pseudo-range, it also brings problems of complex circuit structure, large space occupation and high power consumption.

Method used

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  • Tracking system and method for improving satellite pseudo range precision
  • Tracking system and method for improving satellite pseudo range precision
  • Tracking system and method for improving satellite pseudo range precision

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Embodiment Construction

[0020] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0021] see image 3 Shown is a schematic structural diagram of the tracking system for improving satellite pseudo-range accuracy of the present invention. The high-precision satellite signal tracking system of the present invention, in addition to comprising a mixer, a carrier NCO, a code NCO, a C code generator, a first shift register, a switching circuit, a P code generator, a second shift register, and an I branch Correlator, Q branch correlator, integral and clearing module and processor; Described processor is connected with described integral and clearing module, carrier NCO and code NCO respectively; Described carrier NCO and frequency mixing device; the integration and clearing modules are respectively connected with the I branch correlator and the Q branch correlator; the carrier NCO and the code ...

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Abstract

The invention relates to a tracking system and a method for improving satellite pseudo range precision. The system comprises a frequency mixer, a carrier NCO, a code NCO, a C code generator, a first shift register, a switching circuit, a P code generator, a second shift register, an I branch correlator, a Q branch correlator, an integral sum reset module and a processor, wherein the integral sum reset module is respectively connected with the processor, the I branch correlator and the Q branch correlator; and through the switching circuit, switching between the C code and the P code is realized. According to the tracking system and the method for improving satellite pseudo range precision by adopting the structure, C code and P code signal tracking can be carried out at the same time, and after the C code is captured and tracked, the P code is controlled to start according to time information, and P code tracking is switched. Not only the C code capturing speed but also the high P code pseudo range precision are provided, the circuit has a simple structure, the resources are few used, and the cost and the power consumption are reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to GNSS satellite navigation signal acquisition and tracking, and specifically to a tracking system and method for improving satellite pseudo-range accuracy. Background technique [0002] The Global Navigation Satellite System (GNSS) is a navigation system that uses a constellation of satellites orbiting the Earth to provide signals to a receiver from which it can estimate its position relative to the Earth. Such satellite systems include the GPS system deployed and maintained by the United States, the GLONASS system deployed by the Soviet Union and maintained by the Russian Federation, the GALILEO system currently being deployed by the European Union, and China's Beidou Satellite Navigation System (BDS), among others. [0003] Navigation satellites usually transmit two synthetic signals of the in-phase I branch and the quadrature Q branch simultaneously at any frequency poin...

Claims

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Application Information

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IPC IPC(8): G01S19/30
CPCG01S19/30
Inventor 张维宋阳郗雷翟传润孙国良刘晓娟郑志鹏段亚龙
Owner COMNAV TECH
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