An improved phase correction algorithm in extended towed array method for passive synthetic aperture

Wang, Yu; Gong, Zhong‐Liang; Zhang, Renhe

doi:10.1121/2.0000643

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…Sullivan and Stergiopoulo proposed this concept at the end of the last century [4]. And in the following decades, systems like the extended towed array method (ETAM) [5,6], Fourier transform synthetic aperture method (FFTSA) [7,8], and maximum likelihood estimation method (ML) [9] were continuously proposed. Sullivan also proposed the underwater model-based acoustic signal processing method using state models to estimate the target's bearing angle, which provides a new aspect to realizing PASA [10].…”

Section: Introductionmentioning

confidence: 99%

Tightly Coupled INS/APS Passive Single Beacon Navigation

Zou¹,

Wang²,

Wu³

et al. 2023

Preprint

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Unlike aerial or terrestrial navigation, the Global Navigation satellite system (GNSS) is not available underwater. This is a big challenge for underwater navigation. The inertial navigation system (INS) aided by the single-beacon acoustic positioning system (APS) provides one solution, but the long-range case is limited by low SNR conditions. Inspired by passive synthetic aperture detection, we proposed a new tightly coupled navigation algorithm based on spatial synthesis and one-way-travel-time (OWTT) range measurement. We design two estimators: the DOA/Range estimator using the model-based method and the tightly coupled INS/APS navigation estimator. Based on the improved UKF, all information is combined. Simulation is carried out in MATLAB. Compared with range-only tightly coupled INS/APS navigation, synthetic long baseline (SLBL) algorithm and Doppler velocity logger (DVL) aided centralized extended Kalman filter (CEKF) based single beacon INS/OWTT navigation, the proposed method's performance is proven. The main contributions of this work are: 1. Propose a new architecture of underwater integrated navigation; 2. Apply the passive acoustic detecting method in the navigation to improve accuracy. 3. Apply the tightly coupled method to improve availability.

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Section: Introductionmentioning

confidence: 99%

Tightly Coupled INS/APS Passive Single Beacon Navigation

Zou¹,

Wang²,

Wu³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Sullivan and Stergiopoulo proposed this concept at the end of the last century [4]. In the following decades, systems such as the extended towed array method (ETAM) [5,6], Fourier transform synthetic aperture method (FFTSA) [7,8], and maximum likelihood estimation method (ML) [9] were continuously proposed. Sullivan also proposed the underwater model-based acoustic signal processing method using state models to estimate the target's bearing angle, which provides a new aspect to realizing PASA [10].…”

Section: Introductionmentioning

confidence: 99%

Tightly Coupled INS/APS Passive Single Beacon Navigation

Zou

Wang

et al. 2023

Remote Sensing

View full text Add to dashboard Cite

Unlike aerial or terrestrial navigation, the global navigation satellite system (GNSS) is not available underwater. This is a big challenge for underwater navigation. The inertial navigation system (INS) aided by the single-beacon acoustic positioning system (APS) provides one solution, but the long-range case is limited by low-SNR conditions. Inspired by passive synthetic aperture detection, we proposed a new tightly coupled navigation algorithm based on spatial synthesis and one-way-travel-time (OWTT) range measurement. We design two estimators: the DOA/range estimator using the model-based method and the tightly coupled INS/APS navigation estimator. Based on the improved UKF, all information is combined. Simulation is carried out in MATLAB. Compared with range-only tightly coupled INS/APS navigation, synthetic long baseline (SLBL) algorithm and Doppler velocity logger (DVL) aided centralized extended Kalman filter (CEKF) based single beacon INS/OWTT navigation, the proposed method’s performance is proven. The main contributions of this work are: (1). Propose a new architecture of underwater integrated navigation; (2). Apply the passive acoustic detecting method in the navigation to improve accuracy. (3). Apply the tightly coupled method to improve availability.

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“…As the original ETAM method needs the hydrophones to be overlapped between successive measurements which limits the array motion, an estimation method without restriction of array position overlap was proposed in [20]. Wang et al [21] solved the problem of 'deviation interval' about the ETAM method by taking the average of normalised cross-correlation instead of cross-correlation phases. Besides, the concept of ETAM is also applied for other arrays.…”

Section: Introductionmentioning

confidence: 99%

“…The ETAM method compensates the signals received by moving towed array in successive measurements coherently with a phase correction factor, which is caused by array motion and uncertain phase noise. Recently, many improved ETAM methods have been proposed [20, 21]. As the original ETAM method needs the hydrophones to be overlapped between successive measurements which limits the array motion, an estimation method without restriction of array position overlap was proposed in [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

DOA estimation of multiple sources for a moving array in the presence of phase noise

Zhan

Zhang

2019

IET signal process.

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The authors investigate the issue of direction of arrival (DOA) estimation in the presence of phase noise for multiple sources with a synthetic linear array, which is synthesised by a short moving array. The extended towed array measurements (ETAM) method can extend the array aperture greatly, but can only be applied to multiple coherent sources and requires the array to move with constant velocity. To tackle the problems, the authors generalise the ETAM method to multiple incoherent sources and array non-uniform motion case. The authors first formulate the manifold of the extended synthetic array (SA) moving with known velocity in a straight line. Then the initial DOA estimates and phase correction factors are estimated successively by two-dimensional multiple signal classification (2D-MUSIC) spectrum search using adjacent measurements sampled by the moving array. Moreover, to reduce the complexity, the authors also propose a reduced dimensional MUSIC (RD-MUSIC) method to turn the two-dimensional peak search to one-dimensional. As the array aperture is extended by proper compensation, the DOA estimation performance of the proposed SA method improves. Besides, the proposed method can resolve more number of sources than sensors since every two measurements are used for estimation in each process. Simulation results validate the effectiveness of the proposed method.

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An improved phase correction algorithm in extended towed array method for passive synthetic aperture

Cited by 6 publications

References 8 publications

Tightly Coupled INS/APS Passive Single Beacon Navigation

Tightly Coupled INS/APS Passive Single Beacon Navigation

Tightly Coupled INS/APS Passive Single Beacon Navigation

DOA estimation of multiple sources for a moving array in the presence of phase noise

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