The analysis of vector angles in remote sensed data field and it's application

The visualization of scientific computation is space data field visualization. Scalar, vector and tensor quantity are principal parameters to define multi-dimension data field in linear electromagnetic system. Based on cause and effect rule of instantaneous change electromagnetic system. The response of remote sensing sensor to the electromagnetic field can be regarded as reflect of ground electromagnetic field. The pixel is the way to record the reflectance. Because the linear link between ground electromagnetic field and multi-band data, the digital image can be expressed as multi-dimension space data field. In multi-dimension linear vector space, values of data field can be calculated, differentiated, analyzed and the angle function also can be formulated in the space. The mapping of useful weak feature in remote sensing data field is also carried out based on angle analysis.