Time-frequency analysis for the localization of multiple moving targets using dual-frequency radars.
A dual-frequency radar, which estimates the range of a target based on the phase difference between two closely spaced frequencies, has been shown to be a cost-effective approach to accomplish both range-to-motion estimation and tracking. This approach, however, suffers from two drawbacks: it cannot...
| Main Authors: | , , |
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| Format: | |
| Language: | English |
| Published: |
2008
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| Online Access: | http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173744 |
| Summary: | A dual-frequency radar, which estimates the range of
a target based on the phase difference between two closely spaced
frequencies, has been shown to be a cost-effective approach to
accomplish both range-to-motion estimation and tracking. This
approach, however, suffers from two drawbacks: it cannot deal
with multiple moving targets, and it has poor performance in noisy
environments. In this letter, we propose the use of time-frequency
signal representations to overcome these drawbacks. The phase,
and subsequently the range information, is obtained based on
the moving target instantaneous Doppler frequency law, which is
provided through time-frequency signal representations. The case
of multiple moving targets is handled by separating the different
Doppler signatures prior to phase estimation. |
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