Marine target position measuring method

Abstract

The invention provides a marine target position measuring method, which comprises the following steps of: S1, continuously measuring the geodetic coordinates of a first survey vessel, a second survey vessel and a cooperative target ship; S2, converting the geodetic coordinates of the first survey vessel, the second survey vessel and the cooperative target vessel into geocentric rectangular coordinates; and calculating a theoretical pitch angle and an azimuth angle of the cooperative target vessel; S3, shooting images through the first survey vessel and the second survey vessel, and calculating the horizontal miss distance and the vertical miss distance of a measured target according to pixel points; S4, calculating a theoretical pitch angle and an azimuth angle of the measured target; S5, constructing a first cone intersection equation and a second cone intersection equation; S6, establishing a spherical equation; and S7, constructing an iterative solution model, and calculating to obtain the coordinates of the measured target. According to the method, a platform local reference is not needed, a cone intersection measurement system is utilized, the existing photogrammetry resection measurement mode is simplified, and a simple, convenient and accurate measurement method is provided for a marine target drop point measurement system.

Description

technical field

[0001] The invention relates to the field of target position measurement, in particular to a method for measuring a target position on the sea. Background technique

[0002] The traditional method of measuring the position of targets at sea is mainly carried out in coastal waters. Optical instruments are usually used for measurements in coastal waters when the weather is good and the wind and waves are small. Because the measurement ship is swaying, the theodolite placed on the target ship platform cannot be directly measured by The theodolite shaft angle encoder solves the Euler angle in the outer element of the camera; the main measurement methods currently used include radar ranging, laser ranging, and optical measurement. Because the ship loaded with measuring instruments is subject to sea waves and sea winds, the measurement accuracy of radar and laser ranging on the sea is much lower than that of land measurement and positioning, and the optical measure...

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