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Ephemeris for simulation of satellite navigation signals, and almanac obtaining method

A technology of satellite navigation signal and acquisition method, which is applied in the field of satellite navigation signal simulation, ephemeris or almanac conversion, and can solve the problem that the method for mutual conversion between ephemeris and almanac has not been proposed.

Inactive Publication Date: 2015-10-07
北京理工雷科电子信息技术有限公司
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Problems solved by technology

At present, the algorithm for fitting ephemeris / almanac based on satellite orbit parameters has been relatively perfect, but the method of mutual conversion between ephemeris / almanac has not been proposed. In satellite navigation simulation, it is necessary to obtain ephemeris and almanac parameters for simulation actual satellite signal

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  • Ephemeris for simulation of satellite navigation signals, and almanac obtaining method
  • Ephemeris for simulation of satellite navigation signals, and almanac obtaining method
  • Ephemeris for simulation of satellite navigation signals, and almanac obtaining method

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Embodiment Construction

[0017] In satellite navigation simulation, it is necessary to obtain ephemeris parameters or almanac parameters. The ephemeris parameters are relatively comprehensive, so the accuracy is high, but its valid time is short; the almanac parameters are relatively small, so the accuracy is not high, but its valid time is long. Ephemeris parameters or almanac parameters have their own advantages and disadvantages, and the target parameters need to be obtained according to the actual needs of satellite navigation simulation. In the prior art, when one parameter is known but another parameter is needed, it needs to be obtained by external import. When importing, it is necessary to consider the unity of the effective time of the two parameters, which is inconvenient to realize; it may also be incomplete in external storage. As a result, the required parameters cannot be obtained. Moreover, the ephemeris and almanac are also needed when the analog source sends a message, and the ephemer...

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Abstract

The invention provides an ephemeris for simulation of satellite navigation signals, and an almanac obtaining method, and belongs to the technical field of satellite navigation. The ephemeris for the simulation of the satellite navigation signals, and the almanac obtaining method provided by the invention are applied to one from a known almanac or an ephemeris, do not directly obtain the other one through acquisition of satellite orbit information when the other one is needed but obtain the other one through mutual conversion between the two, and can realize accurate conversion between ephemeris / almanac parameters.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, in particular to an ephemeris or almanac conversion method used for satellite navigation signal simulation. Background technique [0002] Real-time acquisition of satellite position, velocity, and clock error correction information is a prerequisite for satellite navigation and positioning system positioning, and satellite position, velocity, and clock error correction can be calculated from satellite broadcast ephemeris and corresponding clock error correction parameters , therefore, the satellite ephemeris and the corresponding clock correction parameters are indispensable for the satellite navigation system. As a kind of ephemeris, the broadcast ephemeris is calculated by the ground operation control center station of the satellite navigation system, and is forwarded to the user by the satellite in the form of broadcast ephemeris parameters. It is mainly used for real-time navigat...

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Application Information

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IPC IPC(8): G01S19/23
CPCG01S19/27
Inventor 李锐白鑫贝曾大治李昭衡梁广平
Owner 北京理工雷科电子信息技术有限公司
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