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Method for improving precision of course plotter

A track meter and precision technology, applied in the field of track meter, can solve the problems of error reduction and low positioning accuracy of track meter, and achieve the effects of improving accuracy, simple operation, and improving product reliability

Active Publication Date: 2015-03-04
CHONGQING HUAYU ELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, the error caused by this situation cannot be effectively reduced, so that the positioning accuracy of the tracker is not high, and it cannot meet people's needs.

Method used

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  • Method for improving precision of course plotter
  • Method for improving precision of course plotter
  • Method for improving precision of course plotter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Example: see figure 1 , a method for improving the accuracy of a tracker, comprising the steps of:

[0039] Step 1. Lay the chart to be used on the track instrument according to the regulations, and make the selected zero position on the chart coincide with the zero position light spot of the track instrument. The X and Y axes of the chart are respectively aligned with the track Align the X and Y axes of the instrument;

[0040] Step 2. Input the basic information of the chart into the tracker, and the basic information of the chart can be obtained by viewing the chart. The basic information of the chart includes: chart number, reference latitude φ z , scale denominator Mz, chart zero (φ 0 ,λ 0 ).

[0041] Step 3. Select any point in the current chart as a calibration point (preferably select a point far from the zero position of the chart), and store its latitude and longitude information (φ t ,λ t ) into the tracker; during the actual voyage, the latitude and l...

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Abstract

The invention discloses a method for improving precision of a course plotter. The method comprises the following steps of: 1, laying a paper sea chart required to be used on the course plotter according to specification; 2, inputting basic information of the sea chart into the course plotter; 3, calculating the position increment between a calibration point and a zero position through the course plotter by utilizing a seat chart plotting mathematical model; 4, converting the position increment into pulse count of a stepping motor for push by employing a theoretical error compensating parameter; 5, manually controlling the movement of the plot pen of the course plotter, so that a plotting cursor of the course plotter is shifted to be coincided with the calibration point; 6, obtaining an actual error compensating parameter matched with the current sea chart through calibration processing; and (7) finishing the calibration operation. According to the method, the plotting error of the course plotter can be effectively reduced, and the plotting precision of the course plotter is improved.

Description

technical field [0001] The invention relates to a flight tracker, in particular to a method for improving the accuracy of the tracker. Background technique [0002] The track instrument is a navigation device for ships to plot charts in real time and automatically complete chart operations. The use of track instruments greatly improves the accuracy and automation of chart drawing operations, reduces the labor intensity of ship control personnel, and enhances the informatization level of ship navigation operations. [0003] In the development process of the track instrument, by improving the accuracy of each transmission part and adopting a reasonable mathematical model for chart plotting and calculation, the plotting accuracy of the track instrument has made great progress, and its plotting accuracy can reach the full chart of the commonly used chart About 0.2% of the width (980mm), that is, 2mm. Plotting accuracy is a technical indicator that mariners attach great importa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/22G01C25/00
Inventor 杨顺中杨杰周永莉罗艳
Owner CHONGQING HUAYU ELECTRIC GRP
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