G - Physics – 01 – S
Patent
G - Physics
01
S
343/1
G01S 7/40 (2006.01) G01S 13/34 (2006.01) G01S 13/88 (2006.01)
Patent
CA 1117629
METHOD AND APPARATUS FOR AUTOMATICALLY ADJUSTING THE RESOLUTION OF A RADIO ALTIMETER OVER ITS OPERATING ALTITUDE RANGE Abstract of the Disclosure Method and apparatus for automatically adjusting the resolution of a CWFM radio altimeter includes a counter for counting a signal pro- duced by the altimeter having a period relatable to the altitude desired to be measured. A counter counts the number of pulses of a time reference signal occurring over a predetermined number of periods of the altitude related signal. The number of periods of the altitude related signal over which the time-reference-signal pulses are counted is automatically determined by a circuit responsive to the fullness of the time-reference-signal pulse counter to produce a signal after the counter has reached a predetermined count. The next occurring multiple of the altitude related signal is then determined, and the number of time-reference-signal pulses then counted is divided by the number of the multiple found. In a particular embodiment, the counters are binary counters, and the multiples determined are powers of 2, whereby the division is achieved by shifting the data in shift registers a number of places corresponding to the number of multiples of 2N found. - 1 -
304244
Robertson Roy E.
Weber Robert J.
Rockwell International Corporation
Swabey Ogilvy Renault
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