High-resolution sonar location method based on sparsity of objective space
A positioning method and sparsity technology, applied in the field of communication, can solve problems such as large data volume, decreased spatial resolution, and large amount of eigendecomposition calculations
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[0050] The present invention will be further described below in conjunction with the accompanying drawings.
[0051] refer to figure 1 , the specific implementation steps of the present invention are as follows:
[0052] Step 1. Collect the data received by each channel of the array and store it in the system memory.
[0053] The baseband receiving signal of the corresponding channel of the sonar base array element is AD sampled, converted into a digital signal, and the converted digital signal is stored in a storage device.
[0054] Step 2. Matched filtering.
[0055] 2a) Matching filtering is performed on the collected data of each channel using the matched filtering formula. In order to obtain the peak signal-to-noise ratio data of each channel, matching filtering is performed on the collected data of each channel, and the mth is calculated according to the following formula Data after channel matched filtering:
[0056] x m (t) = FT -1 [e m ·s * ]
[0057] where x ...
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