SURFACE MAPPING SYSTEMS AND METHODS USING DYNAMIC THRESHOLDS

摘要

Techniques are disclosed for systems and methods to provide dynamic threshold sonar systems for mobile structures. A dynamic threshold sonar system may include sonar equipment configured to capturing sonar data by receiving and converting acoustic returns into arrays of time differentiated sonar data samples, and a processor communicatively coupled to the sonar receiver. The processor may be configured to receive the sonar data samples and determine noise characteristics of the sonar data. The processor may determine a threshold for surface detection based on the noise characteristics and detect a surface, and determine a distance to the surface, based on a comparison of the sonar data to the threshold that has been determined based on the same sonar data.

主权项

1. A system comprising:
a sonar transducer assembly comprising a sonar transducer; a sonar receiver configured to receive acoustic returns from the sonar transducer and convert the acoustic returns into arrays of time differentiated sonar data samples; and a logic device adapted to communicate with the sonar receiver, wherein the logic device is configured to:
receive the arrays of the time differentiated sonar data samples from the sonar receiver;determine at least one threshold based on noise characteristics of the sonar data samples;detect a portion of the sonar data samples having values that exceed the determined threshold; anddetermine a distance to a surface based on the detected portion of the sonar data samples.