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|1. (WO2018196248) DIRECT WAVE SUPPRESSION METHOD AND SYSTEM FOR MICROWAVE IMAGING SYSTEM|
|Applicants:||SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD.
SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
|Title:||DIRECT WAVE SUPPRESSION METHOD AND SYSTEM FOR MICROWAVE IMAGING SYSTEM|
Disclosed are a direct wave suppression method and system (100) for a microwave imaging system. By means of carrying out a series of filtering operations, such as conversion from a frequency domain to a time domain, filtering, conversion from the time domain to the frequency domain, and cancellation subtraction, on an echo signal set composed of echo signals obtained by a vertical linear array antenna in all the equivalent antenna collection positions thereof, interference caused by a direct wave signal can be effectively suppressed, thus improving the sensitivity of an echo signal receiver, simplifying the subsequent imaging processing process and improving the imaging performance of a microwave imaging system. Thus, an accurate image of a target object can be obtained.