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http://dx.doi.org/10.12673/jant.2022.26.5.319

Position Estimation Technique of High Speed Vehicle Using TLM Timing Synchronization Signal  

Jin, Mi-Hyun (R&D Center, DANAM Systems)
Koo, Ddeo-Ol-Ra (R&D Center, DANAM Systems)
Kim, Bok-Ki (R&D Center, DANAM Systems)
Publication Information
Journal of Advanced Navigation Technology / v.26, no.5, 2022 , pp. 319-324 More about this Journal
Abstract
If radio interference occurs or there is no navigation device, radio navigation of high-speed moving object becomes impossible. Nevertheless, if there are multiple ground stations and precise range measurement between the high-speed moving object and the ground station can be secured, it is possible to estimate the position of moving object. This paper proposes a position estimation method using high-precision TDOA measurement generated using TLM signal. In the proposed method, a common error of moving object is removed using the TDOA measurements. The measurements is generated based on TLM signal including SOQPSK PN symbol capable of precise timing synchronization. Therefore, since precise timing synchronization of the system has been performed, the timing error between ground stations has a very small value. This improved the position estimation performance by increasing the accuracy of the measured values. The proposed method is verified through software-based simulation, and the performance of estimated position satisfies the target performance.
Keywords
TDOA; Positioning system; Telemetry; Precise timing measurement; Range measurement;
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