SURFACE MAPPING SYSTEMS AND METHODS USING DYNAMIC THRESHOLDS
First Claim
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; and
determine a distance to a surface based on the detected portion of the sonar data samples.
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Accused Products
Abstract
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.
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Citations
20 Claims
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1. A system comprising:
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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; and determine a distance to a surface based on the detected portion of the sonar data samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of operating a sonar system, the method comprising:
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receiving sonar data samples from a sonar receiver; determining at least one threshold based on noise characteristics of the sonar data samples; detecting a portion of the sonar data samples having values that exceed the determined threshold; and determining a distance to a surface based on the detected portion of the sonar data samples. - View Dependent Claims (18)
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19. A sonar system comprising:
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sonar equipment configured to capture sonar data; and a processor communicatively coupled to the sonar equipment, wherein the processor is configured to; determine a noise characteristic of the sonar data; determine a threshold based on the noise characteristic; accumulate a group of sonar data samples in the sonar data that each exceeds the determined threshold; and determine a distance to a surface based on a common distance of the group of sonar data samples. - View Dependent Claims (20)
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Specification