Method and system for detecting underwater objects based on frequency spectrum cognition and segmented frequency-hopping frequency modulation
A detection system and detection method technology, which is applied in the direction of radio wave measurement system, measurement device, sound wave reradiation, etc., to achieve the effect of avoiding calculation, improving work efficiency and improving robustness
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[0044] The present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope and implementation methods of the present invention are not limited thereto.
[0045] The structural diagram of the underwater object detection system based on spectrum cognition and segmental frequency hopping is as follows: figure 1 As shown, it includes the following four parts: control center (including two parts of emission control and reception control), detection device, channel model and detection target. The connection relationship and signal transmission relationship of each part are shown in the figure, of which 10 is the control In the center, 110 is the emission control, 1101 is the spectrum listener, 1102 is the band-pass filter (BPF), 1103 is the parallel / serial converter, 1104 is the squarer, 1105 is the integrator, 1106 is the decision device, 1107 is the signal Generator, 1108 is LFM modulator, 1109 is frequency hopping modula...
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