Remote Sensing Tutorial Introduction - Part 2 Page 9¶
II. Non-Photographic Sensor Systems
1800 |
Discovery of the IR spectral region by Sir William Herschel. |
1879 |
Use of the bolometer by Langley to make temperature measurements of electrical objects. |
1889 |
Hertz demonstrated reflection of radio waves from solid objects. |
1916 |
Aircraft tracked in flight by Hoffman using thermopiles to detect heat effects. |
1930 |
Both British and Germans work on systems to locate airplanes from their thermal patterns at night. |
1940 |
Development of incoherent radar systems by the British and United States to detect and track aircraft and ships during W.W.II. |
1950’s |
Extensive studies of IR systems at University of Michigan and elsewhere. |
1951 |
First concepts of a moving coherent radar system. |
1953 |
Flight of an X-band coherent radar. |
1954 |
Formulation of synthetic aperture concept (SAR) in radar. |
1950’s |
Research development of SLAR and SAR systems by Motorola, Philco, Goodyear, Raytheon, and others. |
1956 |
Kozyrev originated Frauenhofer Line Discrimination concept. |
1960’s |
Development of various detectors which allowed building of imaging and non-imaging radiometers, scanners, spectrometers and polarimeters. |
1968 |
Description of UV nitrogen gas laser system to simulate luminescence. |
Primary Author: Nicholas M. Short, Sr. email: nmshort@nationi.net