A Signal Processing Algorithm Based on 2D Matched Filtering for SSAR

Yang, Shaohua; Li, Yong; Kunhui, Zhang; Liu, Jianshe

doi:10.1155/2017/4047983

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Matched filtering (MF) is the optimal linear filter for maximizing the SNR of the output signal in a white noise environment. It is commonly used in the echo signal processing of radar and sonar [24,25]. By combining MF technology with a vector hydrophone array, the SNR requirements can be effectively reduced, providing valuable technical support for depth estimation of weak targets in the deep sea.…”

Section: Introductionmentioning

confidence: 99%

A Deep-Sea Broadband Sound Source Depth Estimation Method Based on the Interference Structure of the Compensated Beam Output

Liang,

Chen,

Meng

et al. 2023

JMSE

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This paper proposes an underwater broadband target depth estimation method based on the multipath arrival structure in medium and short-range deep-sea environments. The proposed approach involves separating the multipath rays arriving at the vertical line array using the matched filtering technique. The combined beamforming is then applied to the vector hydrophone vertical array (VHVA) to obtain more accurate elevation angle estimates. The components of the interference sound field at different distances are judged, and the signal received by the array is compensated using suitable estimated angles. Finally, the multipath time delay difference is extracted from the pulse peaks of the compensated signal, and the target depth is estimated by establishing the relationship among the multipath time delay difference, the elevation angle and depth. Simulations and experiments demonstrate the effectiveness of this method in reducing the depth estimation bias and avoiding the misjudgment of surface or submerged targets.

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Section: Introductionmentioning

confidence: 99%

A Deep-Sea Broadband Sound Source Depth Estimation Method Based on the Interference Structure of the Compensated Beam Output

Liang,

Chen,

Meng

et al. 2023

JMSE

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High speed target tracking 371 radar system based on the use of BPSK signal and digital Doppler shift compensation

Golubicic¹,

Simić²,

Zejak³

et al. 2022

Vojnotehnički glasnik

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Introduction/purpose: This paper presents a model of a high speed target radar tracking system that is much simpler than the existing ones. The Doppler shift is compensated before signal compression, simultaneously with the modification of the clock signal in the compression filter. This is possible thanks to the development of FPGA technology. The most important for this application are very fast clock control units which enable operation with different frequency references up to 1 GHz with an accuracy far below 1 Hz. Methods: In this paper, the methodology of mathematical modeling and simulation is used. Results: The results of the analysis of the most important effects in radars caused by high-speed targets are presented and discussed - target migration through resolution cells and compression filter response distortion due to high target acceleration. Conclusion: Thanks to flexible RF and signal processing hardware, complex radar processing procedures are not required. The sensitivity of the BPSK signal to the Doppler shift (which is usually considered a disadvantage) can be used to reject targets at a slightly different rate. This system can be used in space debris tracking, airspace target tracking, car driving, etc.

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A Signal Processing Algorithm Based on 2D Matched Filtering for SSAR

Cited by 2 publications

References 10 publications

A Deep-Sea Broadband Sound Source Depth Estimation Method Based on the Interference Structure of the Compensated Beam Output

A Deep-Sea Broadband Sound Source Depth Estimation Method Based on the Interference Structure of the Compensated Beam Output

High speed target tracking 371 radar system based on the use of BPSK signal and digital Doppler shift compensation

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