Generalized Radon transform approach to target motion parameter estimation using a stationary underwater vector...

Area of Science:

• Underwater acoustics
• Signal processing
• Target motion analysis

Background:

• Long-term detection of undersea targets is crucial for maritime surveillance.
• Accurate estimation of target motion parameters is essential for effective tracking and interception.

Purpose of the Study:

• To propose a novel method for estimating target motion parameters using submerged static acoustic detection equipment.
• To calculate the motion trajectory of underwater targets based on estimated parameters.

Main Methods:

• The method models targets moving in a uniform straight line.
• It applies the generalized Radon transform (GRT) to bearing-time and line-spectrum-time records.
• Parameters estimated include heading angle, time to closest point of approach (CPA), and velocity-to-range ratio.

Main Results:

• The proposed method accurately estimates target motion parameters from acoustic data.
• Computer simulations and sea trials validated the method's feasibility and performance.
• The system successfully calculated the trajectory of a moving vessel at constant velocity.

Conclusions:

• The developed method provides an effective means for estimating underwater target motion parameters.
• This technique enhances the capabilities of submerged static acoustic detection systems.
• Accurate trajectory calculation aids in underwater target tracking and analysis.