Linear Bessel ranging radar

Details Linear Bessel ranging radar Linear Bessel ranging radar

1978-12-20

1981-08-04

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 7PF, G01S 1332

Patent

active

042825245

ABSTRACT:
A narrow band CW FM fixed height altimeter system utilizing linear Bessel function signal processing wherein a J.sub.0 and a J.sub.1 Bessel function signal component are compared in a biased comparator to yield an output signal at a predetermined, relatively low altitude. The system provides a very small, accurate, low cost solution to the problem of identifying a very low and predetermined altitude.

REFERENCES:
patent: 3789398 (1974-01-01), Erst
patent: 3823399 (1974-07-01), Yamanaka
patent: 3992711 (1976-11-01), Stoakes
patent: 4040357 (1977-08-01), Saunders

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