Positioning and orientation method for portable target indicator

Abstract

The invention provides a positioning and orientation method for a portable indicator. The method includes the following steps: step I device arrangement which includes connecting a main satellite receiver and a four-wall spiral antenna, placing the receiver, the antenna and the target indicator at the position A which serves as the original point, connecting an auxiliary satellite receiver and thefour-wall spiral antenna, placing them at the position B with the distance between A and B more than 5m, wherein a connecting line of A and B forms the line L1; step II satellite receiver positioningwhich includes obtaining the azimuth Alpha between L1 and the north direction after the satellite receiver is started up and positioned; step III construction of indicator optical orientation baseline which includes utilizing an optical sighting device of the indicator to point at an antenna of the satellite receiver, recording the indexing mechanism angle position Theta of the indicator, then pointing the optical sighting device of the indicator to an observation target, recording to the indexing mechanism angle position Delta of the indicator, calculating the included angle between the lineL1 and the line L2, Gamma=Delta-Theta; step IV target position resolving which includes calculating the included angle between the line L2 and the north direction Beta= Gamma- Alpha.

Description

technical field [0001] The invention relates to a positioning and orientation method, in particular to a positioning and orientation method for a portable target indicator. Background technique [0002] The target indicator observes the target object from a long distance, and obtains the relative distance between the target and the indicator through laser ranging, and then combines its own geographical coordinates and the azimuth of the optical axis of the indicator aiming at the observed object to calculate the distance of the observed target. geographic coordinates. The geographic coordinates of the target designator itself can usually be obtained through a satellite positioning system, and the azimuth is obtained through an electronic compass. However, the accuracy of the electronic compass to measure the azimuth is not high, which limits the positioning accuracy of the observation target. With the development of the satellite navigation system, the directional technolo...

AI Technical Summary

Problems solved by technology

However, the accuracy of the electronic compass to measure the azimuth is not high, which limits the positioning accuracy of the observation target

With the development of the satellite navigation system, the directional technology using dual antennas for carrier phase difference in the satellite receiver has also appeared in the market, but the measuring antenna is bulky, the RF cable used by the antenna is long, and the antenna bracket is heavy and bulky, which limits Its Application on Portable Indicator

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