Navigation of aircraft by correlation
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United States of America Patent
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-
Mar 20, 1990
Issued Date -
N/A
app pub date -
Jun 28, 1988
filing date -
Jul 21, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of navigation and serial guidance under utilization of elevational data correlation, wherein a correlator compares terrain specific elevational reference data, with actually acquired and processed altitude data, is improved by using a millimeter wave sensor operating in the atmospheric window of about 94 gigahertz; and being operated during cruising by back and forth scanning in a substantially vertical down direction across a prescribed flight path; occasionally the sensor is pivoted about a horizontal axis, for scanning in the forward direction in a forward search mode for purposes of target acquisition.
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