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Article

Distributed Multistatic Sky-Wave Over-The-Horizon Radar Based on the Doppler Frequency for Marine Target Positioning

Electronic Information School, Wuhan University, Wuhan 430072, China
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Academic Editors: Lubos Rejfek and Ondrej Fišer
Electronics 2021, 10(12), 1472; https://doi.org/10.3390/electronics10121472
Received: 13 May 2021 / Revised: 11 June 2021 / Accepted: 15 June 2021 / Published: 18 June 2021
(This article belongs to the Special Issue Modern Techniques in Radar Systems)
Maritime safety issues have aroused great attention, and it has become a difficult problem to use the sky-wave over-the-horizon radar system to locate foreign targets or perform emergency rescue quickly and timely. In this paper, a distributed multi-point sky-wave over-the-horizon radar system is used to locate marine targets. A positioning algorithm based on the Doppler frequency is proposed, namely, the two-step weighted least squares (2WLS) method. This algorithm first converts the WGS-48 geodetic coordinates of the transceiver station to spatial rectangular coordinates; then, introduces intermediate variables to convert the nonlinear optimization problem into a linear problem. In the 2WLS method, four mobile transmitters and four mobile receivers are set up, and the Doppler frequency is calculated by transmitting and receiving signals at regular intervals; it is proven that the 2WLS algorithm has always maintained a better positioning accuracy than the WLS algorithm as the error continues to increase with a certain ionospheric height measurement error and the Doppler frequency measurement error. This paper provides an effective method for the sky-wave over-the-horizon radar to locate maritime targets. View Full-Text
Keywords: sky-wave over-the-horizon radar; two-step weighted least squares; marine target positioning sky-wave over-the-horizon radar; two-step weighted least squares; marine target positioning
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MDPI and ACS Style

Ren, F.; Gao, H.; Yang, L. Distributed Multistatic Sky-Wave Over-The-Horizon Radar Based on the Doppler Frequency for Marine Target Positioning. Electronics 2021, 10, 1472. https://doi.org/10.3390/electronics10121472

AMA Style

Ren F, Gao H, Yang L. Distributed Multistatic Sky-Wave Over-The-Horizon Radar Based on the Doppler Frequency for Marine Target Positioning. Electronics. 2021; 10(12):1472. https://doi.org/10.3390/electronics10121472

Chicago/Turabian Style

Ren, Fangyu, Huotao Gao, and Lijuan Yang. 2021. "Distributed Multistatic Sky-Wave Over-The-Horizon Radar Based on the Doppler Frequency for Marine Target Positioning" Electronics 10, no. 12: 1472. https://doi.org/10.3390/electronics10121472

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