Ship great circle sailing track deviation determination method

A measurement method and deviation technology, which is applied in two-dimensional position/channel control and other directions, can solve the problems of no uniform standard for the selection of segment numbers and rough calculation

Inactive Publication Date: 2015-07-29
JILIN UNIV
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Problems solved by technology

[0003] The traditional method of calculating the track deviation of the great circle navigation method generally adopts a segmented method, that is, after the great circle route is divided into several segments, each segment is approximately regarded as an equal course line, and then the geometric relationship is used to solve the track deviation; the calculation of

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  • Ship great circle sailing track deviation determination method
  • Ship great circle sailing track deviation determination method
  • Ship great circle sailing track deviation determination method

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[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0060] Such as Figure 1 to Figure 4 Shown, the present invention is achieved in this way, a kind of measurement method of ship's great-circle navigation method navigation track deviation, at first introduces two methods: method 1, known two points latitude and longitude, calculates the shortest distance between two points of its great-circle navigation method and two points Point planned course; method 2, known the longitude and latitude of the starting point, the planned course of the starting point and the shortest distance between the two points of the great circle navigation method, calculate ...

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Abstract

The invention discloses a ship great circle sailing track deviation determination method, which comprises the following five steps: the shortest distance between two points of an expected track is calculated; the shortest track distance between a starting point and the current position is calculated; auxiliary reference points on the expected track are found out; an auxiliary correction deviation angle is calculated; and the track deviation is calculated. A method of acquiring reference points on a planned track is adopted to obtain the track deviation, the ship can correct the sailing direction quickly, and the sailing time is really shortened; according to the determination method applied to the track deviation, the track deviation in the case of great circle sailing can be calculated in a more real-time and accurate mode, the ship track control precision is improved, sailing of the entire segment can be instructed and completed in a more economic and more reliable sailing route, and the purposes of energy conservation and emission reduction can be achieved.

Description

technical field [0001] The invention belongs to the technical field of ship track and course control, and in particular relates to a method for measuring the track deviation of a ship's great-circle navigation method. Background technique [0002] With the gradual commercialization of the GPS positioning system, track control is also gradually realized in the autopilot. If the ship can always approach the desired route during the voyage, it can not only reduce the track deviation and improve the navigation efficiency, but also save fuel and be low-carbon and environmentally friendly. [0003] The traditional method of calculating the track deviation of the great circle navigation method generally adopts a segmented method, that is, after the great circle route is divided into several segments, each segment is approximately regarded as an equal course line, and then the geometric relationship is used to solve the track deviation; the calculation of this method is relatively r...

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Application Information

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IPC IPC(8): G05D1/02
Inventor 王红波刘洋朱显明杨树仁刘廷伟孙志鹏吴钦李小刚
Owner JILIN UNIV
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