Unambiguous range-doppler processing method and system
First Claim
1. A process for use with a radar system for measuring an unambigiuous Range-Doppler measurement of a target'"'"'s velocity, said process comprising the steps of:
- transmitting an ultra-wideband chirped pulse from said radar system;
receiving a Doppler-shifted chirped pulse as a target echo return signal from said target; and
determining said target'"'"'s velocity using both said chirped pulse and said Doppler shifted chirped pulse to determine said measurement thereby.
1 Assignment
0 Petitions
Accused Products
Abstract
Range-Doppler ambiguity is eliminated from an ultra-wideband radar system by transmitting an ultra-wideband chirped pulse towards a moving target, and mixing it with the doppler-shifted chirped pulse which is received as a target echo return signal. Multioctave radar tracing systems can potentiality track stealth aircraft without ambiguity since pulses containing many frequencies can defeat narrow-band radar absorbing material coatings. The unambiguous range-doppler signal processing method mixes the chirped pulse to yield an instantaneous Doppler frequency (which indicates target velocity) and a rate of change in the instantaneous Doppler frequency (which indicates target acceleration).
-
Citations
17 Claims
-
1. A process for use with a radar system for measuring an unambigiuous Range-Doppler measurement of a target'"'"'s velocity, said process comprising the steps of:
-
transmitting an ultra-wideband chirped pulse from said radar system; receiving a Doppler-shifted chirped pulse as a target echo return signal from said target; and determining said target'"'"'s velocity using both said chirped pulse and said Doppler shifted chirped pulse to determine said measurement thereby. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An ultra-wideband radar system for tracking a moving target, and which comprises:
-
a means for transmitting an ultra-wideband chirped pulse pair towards said moving target; a means for receiving a Doppler-shifted chirped pulse pair, said Doppler-shifted chirped pulse pair being a target echo return signal which occurs when said ultra-wideband chirped pulse pair is reflected off of said moving target; and a means for processing signals which receives said Doppler-shifted chirped pulse pair from said receiving means, and measures said moving target'"'"'s velocity, range and position therefrom. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
Specification