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Method for improving precision of course plotter

A tracker and precision technology, applied in the field of tracker, can solve the problems of reduced error and low positioning accuracy of the tracker, and achieves the effects of improving accuracy, simple operation and improving product reliability.

Active Publication Date: 2012-12-19
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

[0041] Example: see figure 1 , A method to improve the accuracy of the tracker, including the following steps:

[0042] Step 1. Place the chart that needs to be used on the tracker according to the regulations, and make the selected zero point on the chart coincide with the zero point of the tracker, and the X and Y axes of the chart are respectively with the track The X and Y axes of the instrument are aligned;

[0043] Step 2. Enter the basic information of the chart into the tracker, and the basic information of the chart can be known by viewing the chart. The basic information of the chart includes: chart number, reference latitude , Scale denominator Mz, chart zero ( , ).

[0044] Step 3. Select any point on the current chart as the calibration point (preferably select the point farther from the zero position of the chart), and add its latitude and longitude information ( , ) Enter the track recorder; in the actual sailing process, the latitude and longitude information o...

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PUM

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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 trajectory instrument, in particular to a method for improving the accuracy of the trajectory instrument. [0002] Background technique [0003] The trajectory is a navigation device for ships to plot nautical charts in real time and automatically complete chart operations. The use of the trajectory greatly improves the accuracy and automation of chart drawing operations, reduces the labor intensity of ship controllers, and enhances the information level of ship navigation operations. [0004] During the development of the trajectory instrument, by improving the accuracy of each transmission part and adopting a reasonable chart plotting to solve the mathematical model, the drawing accuracy of the trajectory instrument has been greatly improved, and its plotting accuracy can reach the full chart of commonly used charts. 0.2% of the width (980mm), which is 2mm. Plotting accuracy is a technical indicator that navigators attach great i...

Claims

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Application Information

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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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