Fish ultrasonic marking precision positioning method and system suitable for complex water environment
A precision positioning and water environment technology, applied in the radio wave measurement system, sound wave re-radiation, utilization of re-radiation, etc., can solve the problems that it is difficult to ensure convergence, the least square estimation does not have anti-interference, and the positioning results are beyond recognition.
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[0060] In order to more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only embodiments of the present invention, and those skilled in the art can also obtain other drawings based on these drawings and obtain other implementation.
[0061] Such as figure 1 As shown, the present invention effectively takes prior information such as the water depth and swimming speed of the fish into consideration when performing data processing. First, the Chan algorithm is used to obtain the approximate coordinates of the signal-marked fish, and then it is used as the initial value of the position And the final positioning result is obtained based on robust least squares estimation.
[0062] The steps of the specific embodiment of the present inve...
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