Communications: directive radio wave systems and devices (e.g. – Testing or calibrating of radar system
Patent
1995-05-25
1998-02-24
Johnson, Stephen M.
Communications: directive radio wave systems and devices (e.g.,
Testing or calibrating of radar system
342 4, G01S 740
Patent
active
057215537
ABSTRACT:
Novel test mounts are defined for a radar cross section testing apparatus that allows a supported object to be tested without interference from the test mount. This includes prescribing a diameter of about 0.61 wavelengths for a cylindrical test mount; maintaining a ratio for the test mount's characteristic dielectric constant and magnetic permeability of about one; and/or installing a frequency transposing apparatus to convert the frequency of radar pulses directed toward the test mount to off-frequency echoes.
REFERENCES:
patent: 4725490 (1988-02-01), Goldberg
patent: 4879560 (1989-11-01), McHenry
patent: 4990923 (1991-02-01), Delfeld
patent: 5229773 (1993-07-01), Danwen et al.
Condon, Handbook of Physics, pp. 1-54 to 1-56 and p. 6 of Index.
Johnson Stephen M.
McDonnell Douglas Corporation
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