G - Physics – 01 – S
Patent
G - Physics
01
S
343/10, 343/60
G01S 13/89 (2006.01) G01S 7/34 (2006.01) G01S 13/90 (2006.01)
Patent
CA 2020639
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 an 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. Fur- thermore, 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.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Deutsche Forschungsanstalt Fur Luft-Und Raumfahrt E.v.
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