Multipath Array Processing for Co-Prime and Under-Sampled Sensor Arrays
Abstract
This proposal concerns the development of signal processing for co-prime and, more generally, non-uniformly under-sampled sensor arr"ays in multipath propagation channels. Many desirable properties of co-prime and sub-sampled arrays rely heavily on the assumption o"f direct-path-only propagation from targets and clutter. Not surprisingly, therefore, the performance of coprime under-sampled array""s can be seriously degraded in multipath due to complex terrain, near-field scattering, skywave HF ionospheric propagation, or in un""derwater acoustic waveguides. In this project, we propose to make co-prime and under-sampled arrays useful in such multipath channel"s. The work consists of three components: 1) the design of augmented co-prime transmit and receive array geometries with non-adaptive beamforming weights which minimize array pattern sidelobes in multipath channels; 2) the development array calibration methods for" coprime and under-sampled arrays which compensate for multipath scattering effects and array element mismatch, and 3) experiments w"ith a microwave radar testbed to obtain real data which can be used to benchmark co-prime and under-sampled array processing methods.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 01, 2017
- Source ID
- N000141712731
Entities
People
- David R. Smith
Organizations
- Duke University
- Office of Naval Research
- United States Navy