NICOP - Beam-scanning short-range radar for complex natural object detection under dense terrain
Abstract
Objects of interest generally have complex structures and it is difficult to detectthem particularly when they are embedded in a dense terrain. One of themethodologies that can identify the nature of an object are its natural resonantfrequencies which are dependent on the size and the shape of the object but isindependent of the angle of incidence of the incoming reflected wave. A given de"nseterrain containing a particular object will have a set of fixed natural frequencies.However, the variation of the resonant freq"uencies will occur depending on the typeof terrain it is embedded in. It has been our experience of research that thesevariations of the natural resonant frequencies will be of second order and hence wecan still use these fundamental concepts which were introduced in 1972 by Dr. CarlBaum from the US Air Force.This project aims to investigate the natural resonant frequencies corresponding tovariation of different objects located in a dense terrain. A wideband back scatteredelectromagnetic wave from an object in a de"nse terrain will be both simulated andmeasured. Then, the natural frequencies will be extracted from poles of the radarreturns by" using the Cauchy method. The natural frequencies for a fixed dense terrainwill be used as reference resonant frequencies for comparing with the ones that willbe obtained when the nature of the object in the dense terrain changes in shape or size.A compact beam#NAME?nas usingmixers. Applications of interest are for detecting ripeness of fruits on a tree and fordetecting intruders in a security zone or looking for concealed metal objects on them.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 23, 2018
- Source ID
- N629091812047
Entities
People
- Monai Krairiksh
Organizations
- Office of Naval Research
- United States Navy