Study of 3mm Waveband Alternating Current Radiometric Imaging
For purpose of imaging detection, an alternating current radiometer is presented in passive millimeter Wave imaging different from the direct current radiometer. Given the system design and spectrum characteristic of the alternating current radiometer, we discussed the alternating current radiometric scanning imaging and the image feature extraction method based on the morphology method. The sunny and foggy scene imaging experiments show that millimeter wave alternating current radiometer possesses higher sensitivity similar to the direct current radiometer and can be used to image and inspect the objects hidden in the dense fog or low visibility with simple and integrated structure.