Investigation on layover imaging in synthetic aperture ladar

Three-dimensional imaging interferometric synthetic aperture ladar

“…The target distance for 2D/3D imaging is about 2.4 m. With this distance, both cross-track apertures could generate well-focused SAL images with a high 2D special resolution which is very close to the theoretical azimuth resolution of 233 mm by synthetic aperture length of 8 mm and theoretical range resolution of 170 mm by heterodyne signal pulse length of 100 ms [15,16] , which is much higher than the fundamental limit resolution of 9.3 mm due to the real aperture size of 0.4 mm (~l 0 L 0 /D); every elevation of 3.3 mm in the target will cause an interferometric phase shift of 2π according to Eq. (1).…”

“…This monostatic strip-map mode InSAL is developed from a previous SAL setup in our laboratory [14][15][16] . Two cross-track apertures are adopted in the receiving optics for InSAL configuration.…”