Communications: directive radio wave systems and devices (e.g. – With particular circuit – Sensitivity time control
Patent
1990-07-06
1991-02-19
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Sensitivity time control
342 92, G01S 1334
Patent
active
049948113
ABSTRACT:
In a sensitivity time control device for an imaging radar system with an automatic gain control attenuator, a sensitivity time control attenuator and an analog-digital converter, output signals of the analog-digital converter are applied, via a device (20) generating an average value and a comparator device, to a control device, which has a ideal on-off relay connected with a device for determining its control parameter, an integrating member, switched downstream, and a device for calculating the operating point of the automatic gain control attenuator device. Furthermore, an n-bit digital analog converter is switched downstream of the control device, by means of the analog output voltage of which the sensitivity time control attenuator is controlled. It is possible, with the aid of the sensitivity time control device, to evaluate continuously the backscatter signal of an imaging radar system in real time, so that it is continuously possible in this way to determine an optimal sensitivity time control curve. By means of such an optimal sensitivity time control it is always possible to obtain the average value of the backscatter signal output independent of the range.
REFERENCES:
patent: 3231889 (1966-01-01), Layde et al.
patent: 3525095 (1970-08-01), Cordry
patent: 3949398 (1976-04-01), Donahue
patent: 4062011 (1977-12-01), Preston et al.
patent: 4370652 (1983-01-01), Lucchi
patent: 4509050 (1985-04-01), Amoroso, Jr. et al.
patent: 4524361 (1985-06-01), Teulings
patent: 4529983 (1985-07-01), Lyall
patent: 4728953 (1988-03-01), Richmond
C. E. Livingstone et al., "CCRS C/X-Airborne Synthetic Aperture Radar; An R n D Tool For The ERS-1 Time Frame", Canada Center for Remote Sensing, Ottawa, Ontario, Canada, 1988.
M. I. Skolnik, "Radar Handbook", Naval Research Laboratory, pp 5-19 to 5-23, McGraw-Hill, Inc., 1970.
Deutsche Forschungsanstalt fuer Luft - und Raumfahrt e. V.
Sotomayor John B.
Tarcza Thomas H.
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