Because maximum field of view in telecentric systems directly relates to the lens aperture closest to the object, larger front lenses are necessary for larger fields of view.

Furthermore, taking phase error of RF front-end, sampling error of high-speed ADC and the size of array into consideration, the image quality of synthetic aperture DSMR is still poor.

The invention relates to a car roof front edge aperture punching mechanism, which adopts an automatic punching technique to cut rear apertures at the front turned-over edge of a car roof.