Navigation of aircraft by correlation
First Claim
1. In a method of navigation and aerial guidance under utilization of elevational data correlation, wherein a correlator compares terrain specific elevational reference data, with actually acquired and processed altitude data, the improvement comprising:
- using a millimeter wave sensor operating in the atmospheric window of about 94 gigahertz for acquiring the altitude data to be fed to and to be used by the correlator;
operating the millimeter sensor during cruising and overflight by back and forth scanning and in a substantially vertical down direction across a prescribed flight path to obtain the acquired altitude data; and
occasionally pivoting the sensor about a horizontal axis, for scanning in the forward direction for purposes of searching for particular targets to be tracked subsequently of said altitude to the acquiring data.
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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.
38 Citations
4 Claims
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1. In a method of navigation and aerial guidance under utilization of elevational data correlation, wherein a correlator compares terrain specific elevational reference data, with actually acquired and processed altitude data, the improvement comprising:
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using a millimeter wave sensor operating in the atmospheric window of about 94 gigahertz for acquiring the altitude data to be fed to and to be used by the correlator; operating the millimeter sensor during cruising and overflight by back and forth scanning and in a substantially vertical down direction across a prescribed flight path to obtain the acquired altitude data; and occasionally pivoting the sensor about a horizontal axis, for scanning in the forward direction for purposes of searching for particular targets to be tracked subsequently of said altitude to the acquiring data. - View Dependent Claims (2, 3, 4)
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Specification