USING FREQUENCY DIVERSITY TO DETECT OBJECTS

摘要

Technologies for detecting a passive object through the use of frequency diversity to find at least a resonant peak are disclosed. For example, a radar system may illuminate a suspect area with a pulsed radio wave based on a large number of frequency bands and based on parameters associated with the passive object. The reflected radio wave may be processed to generate synthetic aperture radar (SAR) maps associated with the frequency bands. The SAR maps may be analyzed and compared to determine large deviation amplitudes that may indicate a location of the passive object.

主权项

1. A detection system comprising:
radar transmitter circuitry configured to transmit a first signal representative of a plurality of frequency bands, each frequency band being at an interval from another frequency band based on a range resolution, the plurality of frequency bands forming a bandwidth that causes a variation of a scatterer in a radar map; radar receiver circuitry configured to generate a plurality of synthetic aperture radar maps based on a second signal representative of a reflection of the first signal, each synthetic aperture radar map of the plurality of synthetic aperture radar maps being associated with a frequency band from the plurality of frequency bands; and signal processing circuitry configured to detect a target object based on a first synthetic aperture radar map representative of the plurality of synthetic aperture radar maps and a contribution of a second synthetic aperture radar map of the plurality of radar maps to the first synthetic aperture radar map.