Time difference location method for distributed multi-point location monitoring system

Abstract

The invention belongs to the technical field of real-time location of distributed multi-point location monitoring systems, in particular to a time difference location method for the distributed multi-point location monitoring system. The method comprises the steps that a location method is selected according to GDOP time difference location accuracy; according to the location method, a main station of a receiving station is determined and an observation model is established; location information of a target is calculated by a time difference location algorithm of semi-definite positive relaxation, and a location result is presented to a user through a terminal display monitoring system, and therefore the abilities of an airport controller of monitoring and controlling an airport scene aircraft and a guide vehicle are improved. According to the time difference location method for the distributed multi-point location monitoring system, all computational analysis processes are spontaneous, the impact of human factors on the location result of the aircraft and the guide vehicle is minimized to the largest degree, and all data processing processes are parallel, the efficiency of data processing is greatly improved, and therefore an analyzed result can be obtained the most quickly when the user carries out the operation. The time difference location method for the distributed multi-point location monitoring system is accurate in location and can still estimate the location of a signal source when a measurement error is big.

Description

technical field [0001] The invention belongs to the technical field of real-time positioning of a distributed multi-point positioning monitoring system, and in particular relates to a time-difference positioning method used in a distributed multi-point positioning monitoring system. Background technique [0002] With the rapid development of my country's economy, the number of flights is also increasing rapidly, which puts forward higher requirements for the command of the air traffic control system controller and the maintenance of facilities and equipment. The airport surface surveillance radar is a radar, mainly used to monitor the airport scene Aircraft and vehicles use the target's own radiation or reflection characteristics of electromagnetic waves to find targets. In the process of maintaining the airport surface surveillance radar, equipment maintenance personnel include the following three problems: aircraft target splitting, certain blind spots, and false targets ar...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a time difference positioning method for a distributed multi-point positioning monitoring system. This time difference positioning method greatly reduces the complexity of the positioning accuracy calculation method and improves the positioning accuracy calculation. The efficiency, and there is no requirement for the selection of the initial value of the iteration, it can converge to the global minimum point, and there will be no local convergence or divergence; when the measurement error is large, the position of the signal source can still be better estimated, Positioning accuracy

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