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Positioning satellite screening method and system

A technology of positioning satellites and screening methods, applied in the field of communications, can solve problems such as low positioning accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2018-04-06
慧众行知科技(北京)有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The embodiment of the present invention provides a positioning satellite screening method and system to solve the problem in the prior art that for multi-satellite positioning, the selection of satellites is relatively simple, so the final positioning accuracy is low

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  • Positioning satellite screening method and system
  • Positioning satellite screening method and system
  • Positioning satellite screening method and system

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Embodiment Construction

[0044] The technical solutions of the present invention will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific technical features in the embodiments are only descriptions of the technical solutions of the present invention, rather than limitations. , the embodiments of the present invention and specific technical features in the embodiments may be combined with each other.

[0045] like figure 2 Shown is a flow chart of a positioning satellite screening method in an embodiment of the present invention, the method comprising:

[0046] S20. Based on the total candidate satellites and the number m of satellites required for positioning, determine the total number of cycles n of the algorithm;

[0047] Specifically, in the embodiment of the present invention, before executing the algorithm, it is first necessary to determine the total number of cycles of ...

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Abstract

The invention discloses a positioning satellite screening method and system. With application of the method, total candidate satellites can be combined one by one and then the corresponding signal-to-noise ratio of each satellite combination can be obtained by computation so that the satellite combination of the optimal signal-to-noise ratio can be selected out of all the satellite combination toperform target positioning, and the positioning accuracy can be greatly enhanced by performing positioning through the satellite combination selected by the mode.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a positioning satellite screening method and system. Background technique [0002] In the theoretical situation where there is no measurement error, one positioning equation represents a curve, and the positioning equations can form multiple curves, and the intersection point is the point where the target is located. [0003] But in reality, there are measurement errors. A positioning equation represents a circle, and the intersection point of multiple equations will change from a point to an area. The coordinates of positioning settlement may be a certain point in this area. Obviously, the larger the overlapping area , the greater the possible positioning error. Measurement error determines the "thickness" of the curve. [0004] obviously figure 1 Among them, the size of the overlapping area is not only related to the "thickness" of the line, but also rel...

Claims

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Application Information

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IPC IPC(8): G01S19/28
CPCG01S19/28
Inventor 王争儿何飞宏
Owner 慧众行知科技(北京)有限公司
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