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Loop parameter dynamic weighting method

A loop parameter and dynamic weighting technology, which is applied in the field of surveying and mapping, can solve the problems of observations without literature descriptions, etc., and achieve the effects of easy upgrading, improved data quality, and enhanced competitiveness

Inactive Publication Date: 2018-12-04
SHANGHAI HUACE NAVIGATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, how to obtain high-precision and low-cycle-slip observations is not explained in the literature.

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Embodiment Construction

[0015] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0016] In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description, so as to illustrate the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0017] At present, the design of the satellite positioning receiver loop often stays in a loop structure and a set of parameters. This design structure is simple, debugging...

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Abstract

The invention provides a loop parameter dynamic weighting method. The method comprises the following steps of S1, carrying out loop tracking, when a satellite begins to ascend, firstly carrying out open-loop estimation, and carrying out closed-loop frequency traction processing to pull a carrier frequency to a preset range, and then, cutting into a frequency traction loop and stabilizing in a closed loop carrier loop code loop tracking state; S2, carrying out loop state detection to distinguish a signal type and a tracking state; and S3, during loop tracking, according to a tracking signal type and signal intensity, calculating the index value of a loop parameter in real time, and then loading a parameter from a loop parameter array. By using the method, loop dependence on a same group ofparameters in various environments can be avoided and the loop can work in an optimal state.

Description

technical field [0001] The invention relates to the field of surveying and mapping, in particular to a method for dynamic weighting of loop parameters. Background technique [0002] The index of the loop determines the quality of the data. An excellent loop algorithm can achieve a better balance of observations in all aspects, so that both positioning accuracy and data quality can be improved. How to improve the performance of the loop is the focus of each manufacturer's research, and it is also the core technology of each manufacturer. At present, the publicly published literature is only to study the simulation performance of the loop, and the engineering realization and parameter calculation in the loop have not been made public. Among them, how to obtain high-precision and low-cycle-slip observations is not described in the literature. Based on the self-developed B380 multi-mode multi-frequency high-precision board, this paper describes the design of the loop algorithm...

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Application Information

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IPC IPC(8): G01S19/24G01S19/29G01S19/30
CPCG01S19/246G01S19/29G01S19/30
Inventor 刘强何伟贺成成王超张沛尧
Owner SHANGHAI HUACE NAVIGATION TECH