Research on Underwater Target Positioning and Calculation based on Pulse Signal
School of Electronic Information and Electrical Engineering Department of Automation, Shanghai Jiao Tong University, Shanghai 200240, China
| Abstract: | The underwater target detection based on the pulse signal has many applications in the field of marine engineering. Based on the simulation analysis of the traditional circular intersection positioning solution, this paper studies and designs a scheme for accurately calculating the target depth by estimating the time delay information of the three-pulse coded signal. The first pulse signal detects the target position and calculates the horizontal distance information. The time delay difference between the sounding pulse and the reference pulse and the first pulse corresponds to the pressure difference obtained by the high-precision sensor in the target, and the depth information of the target is obtained. However, the copy correlation technology is combined with the quadrature receiver algorithm theory to complete the amplitude detection and envelope estimation of sounding pulse and reference pulse. Through the verification of the field measurement data results, the underwater target resolution algorithm based on the pulse signal can achieve the indicators that the horizontal positioning error of the target is less than 5m and the depth positioning error is less than 2m in a specific scenario. This method can provide strong support for collaborative positioning of underwater targets and guarantee early warning maintenance. |
| Keywords: | Pulse Signal Design; Underwater Target Location; Circular Intersection Algorithm; Error Analysis |
| DOI: | 10.57237/j.se.2023.03.003 |
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Received: 29 April 2023
Accepted: 25 June 2023
Published Online: 29 June 2023
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