Technique of characterizing the nature of a radiation path trans

Details Technique of characterizing the nature of a radiation path trans Technique of characterizing the nature of a radiation path trans

1976-03-31

1977-08-16

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

340 3M, 340 155TA, 343100CL, G01S 902, G01S 966

Patent

active

040429288

ABSTRACT:
A specially generated broad band radiation signal is passed through a radiation path. The output radiation as modified by that path is compared with the transmitted radiation in a manner to characterize in the frequency domain the radiation path transfer function or the modified radiation by a few constants of a Taylor series expansion. One application of this technique is in sonar or radar work for characterizing the shape of an object in a manner independent of its velocity but with a high signal-to-noise ratio and very good resolution. The comparison of the modified radiation with the transmitted radiation in order to determine the Taylor series coefficients is accomplished by a correlation or matched filtering operation. The technique in its broadest sense also has applications for compensating communication circuits and in parameterizing human speech.

REFERENCES:
patent: 3398269 (1968-08-01), Williams
patent: 3483557 (1969-12-01), Skenderoff et al.
patent: 3610901 (1971-10-01), Lynch
patent: 3618095 (1971-11-01), Darlington
patent: 3716823 (1973-02-01), Thompson et al.
patent: 3787849 (1974-01-01), Sletten et al.
patent: 3803598 (1974-04-01), Abernathy et al.
patent: 3803606 (1974-04-01), Lebail et al.
patent: 3925653 (1975-12-01), Otto

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