Apparatus and method for short dwell inverse synthetic aperture radar (ISAR) imaging of turning moving vehicles
First Claim
1. A method for generating a radar image, comprising:
- using a sensor resource manager (SRM) to predict when a moving target will perform a turning motion;
using the sensor resource manager (SRM) to schedule a radar waveform to collect a first plurality of data in a first domain;
collecting the first plurality of data in the first domain, wherein one or more of the first plurality of data include data of the moving target engaged in the turning motion at a rotational rate greater than a threshold;
converting the first plurality of data from the first domain to a second plurality of data in a second domain, wherein the second domain is a first two-dimensional transformation of the first domain using a range compression step and a Doppler (azimuth) compression step;
extracting one or more of the second plurality of data;
converting the one or more of the extracted second plurality of data to a third plurality of data in a third domain, wherein the third domain is a second two-dimensional transformation of the second domain;
phase compensating the third plurality of data; and
transforming the phase compensated third plurality of data to generate the radar image.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus and method for generating a radar image including acquiring a first plurality of data in a first domain, wherein one or more of the first plurality of data include data of a moving target engaged in a turning motion at a rotational rate greater than a threshold; converting the first plurality of data from the first domain to a second plurality of data in a second domain, wherein the second domain is a first two-dimensional transformation of the first domain; extracting one or more of the second plurality of data; converting the one or more of the extracted second plurality of data to a third plurality of data in a third domain, wherein the third domain is a second two-dimensional transformation of the second domain; phase compensating the third plurality of data; and transforming the phase compensated third plurality of data to generate the radar image.
24 Citations
44 Claims
-
1. A method for generating a radar image, comprising:
-
using a sensor resource manager (SRM) to predict when a moving target will perform a turning motion; using the sensor resource manager (SRM) to schedule a radar waveform to collect a first plurality of data in a first domain; collecting the first plurality of data in the first domain, wherein one or more of the first plurality of data include data of the moving target engaged in the turning motion at a rotational rate greater than a threshold; converting the first plurality of data from the first domain to a second plurality of data in a second domain, wherein the second domain is a first two-dimensional transformation of the first domain using a range compression step and a Doppler (azimuth) compression step; extracting one or more of the second plurality of data; converting the one or more of the extracted second plurality of data to a third plurality of data in a third domain, wherein the third domain is a second two-dimensional transformation of the second domain; phase compensating the third plurality of data; and transforming the phase compensated third plurality of data to generate the radar image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
12. The method of clam 1, further comprising classifying the radar image into a pre-defined ground vehicle category.
-
23. An apparatus for generating a radar image, comprising:
-
a sensor resource manager (SRM) configured to predict when a moving target will perform a turning motion, and to schedule a radar waveform to collect a first plurality of data in a first domain; a receiver configure to collect the first plurality of data in the first domain, wherein one or more of the first plurality of data include data of the moving target engaged in the turning motion at a rotational rate greater than a threshold; and a processor coupled with a memory storing software codes, wherein the software codes are instructions which when implemented by the processor cause the processor to; a) convert the first plurality of data from the first domain to a second plurality of data in a second domain, wherein the second domain is a first two-dimensional transformation of the first domain using a range compression step and a Doppler (azimuth) compression step; b) extract one or more of the second plurality of data; c) convert the one or more of the extracted second plurality of data to a third plurality of data in a third domain, wherein the third domain is a second two-dimensional transformation of the second domain; d) phase compensate the third plurality of data; and e) transform the phase compensated third plurality of data to generate the radar image. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
-
-
34. The apparatus of clam 23 wherein the processor is further configured for classifying the radar image into a pre-defined ground vehicle category.
Specification