Breast tumor characteristic signal extraction method for ultra wide band microwave detection
A technology for microwave detection of breast tumors, applied in the field of biomedical detection, can solve the problem of inability to obtain tumor-free microwave detection signals
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[0020] After the ultra-broadband signal irradiates the breast, the energy of the tumor scattering signal received by the antenna array is smaller than that of the direct wave signal and the reflection signal of the skin layer, so it is impossible to directly extract the tumor scattering signal, which will affect the accuracy of tumor detection. The linear antenna array is used to conduct multiple detections in different directions on the breast surface, and the echo signals are processed to realize the extraction of tumor scattering signals.
[0021] The present invention will be described below in conjunction with the accompanying drawings and simulation examples.
[0022] figure 1 and figure 2 are the antenna array structure and the breast tissue model adopted by the detection system, respectively. In order to meet the requirements of imaging resolution and detection depth, a first-order derivative Gaussian signal with a center frequency of 5GHz and a bandwidth of 10GHz i...
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