| 摘要 |
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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