Radar apparatus

Details Radar apparatus Radar apparatus

1984-12-31

1987-09-01

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Transmission through media other than air or free space

342 21, 342111, 342134, 342196, 324337, G01S 728

Patent

active

046912045

ABSTRACT:
A radar apparatus for detecting a distance from a radar antenna (13) to a buried object (1) underground.
The radar apparatus calculates the distance based on Maxwell's equation relating to speed of propagation of electromagnetic waves using received signals of two or more different frequencies in the receiver (5) which were transmitted from the antenna (13), and thereafter reflected from the buried object (1).

REFERENCES:
patent: 2077707 (1937-04-01), Melton
patent: 3351936 (1967-11-01), Feder
patent: 3831173 (1974-08-01), Lerner
patent: 3896434 (1975-07-01), Sirven
patent: 4218678 (1980-08-01), Fowler et al.
patent: 4504833 (1985-03-01), Fowler et al.
Electronic Communications Society Technical Research Report, pp. 21-28, "Underground Radar System" (T. Suzuki et al); vol. 79, No. 220, 1980.
M. Skolnik, Intro. to Radar Systems; pp. 76-77, (McGraw-Hill, 1980).

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