返回Google圖書搜尋

Controlled Processing of Direct Readout Data from Weather Satellites

出版	Air Force Cambridge Research Laboratories, United States Air Force, 1970
URL	http://books.google.com.hk/books?id=al2z0AEACAAJ&hl=&source=gbs_api

註釋Optimization of satellite pictures by standardizing the range of reflective density is accomplished by the use of a dynamic signal simulator which sweeps the amplitude of a 2400 Hz signal from 4 to -32 dBm providing a direct display of the crater tube current versus signal amplitude on an oscilloscope. The time required for setting up the standardizing function is reduced to a few minutes per day. Use of these techniques permits quantitative temperature measurements to be made from DRIR pictures with a densitometer. (Author)