This book is produced for the increasing number of undergraduate and graduate courses in remote sensing. It aims to provide synthesis of the remote sensing principles that will be of value to environmental scientists with backgrounds in either pure or applied science. It covers basic principles and discusses essential technologies, including aerial photography, satellites, radar, digital imaging, thermal radiation, and much more. The book concentrates upon three themes: first, that of the relationship between properties of our environment and remotely sensed images of our environment. Second, the techniques of acquiring remotely sensed images and third, the procedures of processing and interpreting remotely sensed images in order to locate, identify and study areas of our environment. Students from wide range of backgrounds will use the book as a springboard into the remote sensing literature.