CPC G01S 1/753 (2019.08) [G01S 3/801 (2013.01); G01S 3/8022 (2013.01); G01S 5/24 (2013.01); G01S 15/582 (2013.01); G01S 15/60 (2013.01); G01S 2201/07 (2019.08); G01S 2205/04 (2020.05)] | 20 Claims |
1. A direction-of-arrival estimation method of an object submerged underwater, comprising:
collecting data snapshots over time at an acoustic array receiver attached to the object underwater from beacon signals transmitted from two known location beacons;
organizing the collected data snapshots in a tensor data structure; conducting joint space-time signal processing; and
estimating azimuth and elevation angles-of-arrival of the transmitted beacon signals via Doppler-, multipath-, and impulsive noise-resistant tensor subspaces.
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