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Design on Navigational Parameter Compute Software and Man-Machine Interface of Loran-C Receiver

Author: HuDongLiang
Tutor: HuXiuLin
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: Loran-C System Loran-C Receiver Hyperbolic Navigation Coordinate Conversion Navigational Parameter Man-Machine Interface
CLC: TN966
Type: Master's thesis
Year: 2005
Downloads: 157
Quote: 0
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Abstract


Position fixed and navigational parameter computed for vehicle is the basic task of the navigator. Once user’s situation is determined, the parameter such as course, speed, deviating distance, required time of arriving at the next waypoint etc. can be computed by micro-processor of the receiver. Navigational parameter by the Loran-C receiver measuring is time-difference (TD) from user to three (or more) launchers. These parameter must be transformed into geographic coordinate, and calculated further other parameter which be interested of user. The man-machine interface is indispensability part of the Loran-C receiver. The receiver can lead user go along the fixed route and put in safely and approach object via the interface. Two tasks showed in the paper, a navigational data-compute program and a man-machine interface of Loran-C receiver is designed. Computing method of hyperbolic navigation is particularly analyses. Mathematical models for converting time difference into latitude-longitude coordinate and calculation of sail parameter is presented. Frame and work flow of the navigational data-compute software is confirmed. The flow diagram for compute programmer of function module is introduced. The accuracy of coordinate conversion module is simulated. Based sail task and requirement of user, structure of the man-machine system and function of subsystem is discussed. Software structure of the man-machine interface is designed in the last section of this paper.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio navigation > Navigation systems of the various institutional
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