Production and characteristics of Sensor Corrected and geocoded ellipsoid corrected products

In applications of high-resolution spaceborne imagery, different users have different requirements for accuracy and the form of the product. The commercial high-resolution satellites use their own geometric product level to adapt to different users. But various satellites have different geometric product levels. To establish a suitable optical pushbroom satellite geometry product level becomes the key to the development of optical satellite technical issues placed before us. This paper presents a geometric product level as standard and the production methods of the Sensor Corrected level and the Geocoded Ellipsoid Corrected level are given based on the standard. A case study using the ALOS satellite has been used to test the methods. Experimental results show that the Sensor Corrected Level Product performs very well in image stitching, and the Geocoded Ellipsoid Corrected Level Product solves the low accuracy of the RFM (rational function model) caused by the jumping of exterior orientation elements.