System Concept and Analysis of an Artificial Ionospheric Mirror (AIM) Radar
Rept. for 31 Aug 1989-31 Aug 1990
ARCO POWER TECHNOLOGIES INC WASHINGTON DC
Pagination or Media Count:
Recognition of performance limitations associated with traditional skywave over-the-horizon OTH high frequency HF radars has led a number of investigators to propose the creation of an Artificial Ionospheric Mirror AIM in the upper atmosphere, in order to reflect ground-based radar signals for OTH surveillance. The AIM is produced by beaming sufficient electromagnetic power to the lower ionosphere around 70 km to enhance the in situ ionization level to 10 to the 7th power - 10 to the 8th power electronscu cm, thereby providing an ionized layer capable of reflecting radar frequencies of 30 - 90 MHz. This paper presents a baseline AIM system concept and an associated performance evaluation, based upon the relevant ionization and propagation physics and in the context of air surveillance for the cruise missile threat. Results of the subject study indicate that a system using this concept would both complement and enhance the performance of the existing skywave OTH radars.
- Atmospheric Physics
- Active and Passive Radar Detection and Equipment
- Plasma Physics and Magnetohydrodynamics