Direction-finding and distance-measurement positioning method with unknown partial base station positions

Abstract

The invention discloses a direction-finding and distance-measurement positioning method with unknown partial base station positions, and belongs to the technical field of target positioning. The direction-finding and distance-measurement positioning method comprises the steps of position unknown base station initial position estimation, target initial position estimation, base station and target position iterative estimation and the like. According to the direction-finding and distance-measurement positioning method, under the condition that the positions of part of base stations are unknown, a target can be positioned by fully utilizing the base stations and the direction and distance measurement of the base stations to the target, and compared with a direction-finding and distance measurement positioning method only utilizing base stations with known positions, the method can further improve the target positioning precision and realize the positioning of the base stations with unknown positions, and is conductive to development of positioning of other targets.

Description

technical field [0001] The invention belongs to the technical field of target positioning, and in particular relates to a direction-finding and distance-finding positioning method in which the positions of some base stations are unknown. Background technique [0002] The global satellite navigation system (GNSS) is widely used in military weapons, transportation, and industrial production. However, GNSS equipment is greatly affected by the quality of satellite signals at the antenna end, including intentional interference in military applications and natural occlusion in the living environment. , unintentional interference, etc. reduce its continuous navigation capability. Therefore, it is urgent to study some target positioning technologies in GNSS-denied environments. The positioning technology based on direction finding and ranging uses the measurement of the direction and distance from the target to the base station with known position to realize the positioning of the ...

AI Technical Summary

Problems solved by technology

On a two-dimensional plane, only one base station with a known location is required to achieve target positioning; however, the direction and distance measurements have errors, which makes the positioning accuracy of a single station direction and distance measurement not high, so the direction of multiple known base stations is combined , distance measurement to locate the target is very promising

[0003] In practical engineering applications, because the location information of the newly built base station is not easy to obtain, or other factors cause the lack of location information of the base station, it is impossible to directly use this type of base station for target positioning, thereby wasting its direction-finding and ranging information

The Chinese patent with the application number CN201710554722.5 discloses a method for locating base stations and terminals, which can locate the target terminal when the position of the target base station is unknown, but this method is aimed at non-cooperative positioning systems and uses third-party direction-finding equipment , with limited practicality

Images