Physics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1059..204m&link_type=abstract
IN: Space sensing, communications, and networking; Proceedings of the Meeting, Los Angeles, CA, Jan. 16-18, 1989 (A90-31926 13-1
Physics
Imaging Radar, Monopulse Radar, Space Based Radar, Submillimeter Waves, Synthetic Aperture Radar, Cyclotron Resonance Devices, Free Electron Lasers, Linear Accelerators, Masers, Radio Frequencies, Scaling Laws, Wiggler Magnets
Scientific paper
The use of millimeter to submillimeter wavelength space-based radars for strategic defense, and the prospect of developing RF sources to power them are examined. These radars can examine objects in space at the range of about 3000 km, with the resolution from 2-20 meters, depending on the radar configuration, and potentially in real time. The main application envisioned here is midcourse decoy discrimination. Two simplest monostatic radar configurations, a space-based monopulse system and a space-based SAR, are analyzed. One advantage of a radar over a passive system is that with advanced radar techniques of monopulse, and SAR, and ISAR, the diffraction limited resolution for a given antenna size can be exceeded by a large amount. The fact that for a SAR at short wavelength the energy per pixel of image is independent of wavelength gives a large advantage to the most efficient RF source; and it is suggested that fast wave, electron beam driven sources could have significant advantages over CO2 lasers in this respect. The state of the fast wave technology is then reviewed, and the prospect of developing a tube to power a space-based radar is evaluated.
Granatstein Victor
Manheimer Wallace M.
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