The argument sensitivity field is a holographic sensitivity field expressed by the partial derivative of the electric holographic wave with respect to the argument. It is effective to use such a sensitivity field to extract the propagating trace of electric holographic wave with soft field effect under the working mode of single transmitting sensor and integrated receiving sensor with functions of receiving and grounding. If it is really necessary to adopt the multi-sensor transmitting mode, fine tuning on the parameters of transmitting sensors might be necessary.
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