Radio location method based on reach path reverse tracking

Abstract

The invention relates to a radio location method based on reach path reverse tracking, using multi-path and NLOS path signal idea for locating, adopting the information fusion technology for reverse tracking different signal reach paths of the base station, gradually reducing the position feasible region of the mobile table and locating the mobile table. The radio location method adopts the environment geographic information for reducing the impact to the location result from the NLOS error, raising location precision and raising the effectiveness of the reverse ray tracking location method, the location precision is more accurate for more reach paths, the reliability of the radio location method is improved, the location precision is higher and the robustness is stronger.

Description

technical field [0001] The invention relates to the field of radio positioning, in particular to a radio positioning method based on arrival path reverse tracing. Background technique [0002] As basic information closely related to human production and life, location information has become an indispensable requirement in modern society. Its applications involve transportation, astronomy, meteorology, environmental protection, disaster relief, mobile communications, geological exploration, biomedicine, earthquake monitoring, etc. Numerous areas. With the development of science and technology, people's requirements for positioning accuracy are getting higher and higher, and these demands continue to promote the proposal of new concepts and technologies for positioning. Radio positioning technology also has important application value in the field of national defense. Modern local warfare is a high-tech information warfare, and electronic warfare is an important pillar of inf...

AI Technical Summary

Problems solved by technology

However, this method uses positioning parameter feature sequence matching technology to solve the target position, which mainly has the following three problems: (1) the workload of offline fingerprint database establishment is huge and cumbersome, the cycle is long and the cost is high; (2) when the environment changes The fingerprint database needs to be updated from time to time, and the maintenance is not convenient enough; (3) only the positioning parameters are used for simple matching in the database when calculating the position, and the optimal positioning results are not studied from a theoretical and global perspective, so the positioning accuracy needs to be further improved improve

For the traditional radio positioning technology, most of them only use the measurement information of the observation station for positioning, but due to the complexity of the actual wireless environment, the positioning measurement data are often subject to large noise pollution, which affects the positioning accuracy and positioning probability of the positioning system

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