A New Approach for Designing Current Compression Generators with the Aim of Energy Efficiency Improvement and the Quality of LORAN Signal in Local Positioning System

Document Type : Original Article

Abstract

In this paper, a local positioning system based on LORAN positioning system is investigated. A radio foundation LO­RAN system accurately gains the position by measuring the difference in arrival times of vehicles which are far from each other and are moving from the tran­smitter station. LORAN transmitter station consists of power supply, antenna cou­pling network, and antenna damping network. Power supply in local positioning system is in charge of ge­ne­rat­ing half sine wave through the current compression generator. In this paper, the principle of designing current com­pr­ession generators (CCG) is proposed with the aim of transferring the maximum energy utilizing the least number of CCG modules. This approach is in contrast with the conventional ones in which the same CCG modules are emp­loy­ed. Accordingly, in the same number of CCGs, the proposed strategy is capable of transferring more energy to an­tennae circuit as well as higher quality in LORAN signal. The analytical design of CCGs is carried out to make the antenna current being the maximum of 175 amps at 62.5 microseconds. To this end, both strategies are exa­mi­ne­d and their results will be quantitatively and qualitatively compared with each other.

Keywords


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