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A new low altitude radar altimeter is being developed by Sperry Phoenix Company for use in all-weather landing of aircraft. Known as the SPA-10 landing altimeter, it is unique among low altitude altimeters. It uses only a single antenna. A combination of low noise FM-CW techniques and a novel integrated microwave assembly enables operation to zero altitude. The SPA-10 operates in the 4300 megacycle band, and is resistant to interference from either companion installation or that arising from external sources.
Aerospace and Navigational Electronics, IEEE Transactions on (Volume:Technical_Paper , Issue: 0 )
Date of Publication: Oct. 1963