NEAR FIELD SUBWAVELENGTH FOCUSING SYNTHETIC APERTURE RADAR WITH CHEMICAL DETECTION MODE

摘要

Detection of objects such as a buried explosive device while operating from a moving platform using a radio frequency emission system having two modes. An electromagnetic wave emission and detection system operates in a first mode to locate objects of interest and in a second mode to determine if an object contains explosive materials. In the first mode, the emission and detection system preferably operates as a subwavelength focusing, wideband, superlens using a near field super gain synthetic aperture continuous wave (CW) swept radar. In the second mode the system preferably enabled after detection of an object in the first mode, uses chemical detection methods such as Nuclear Quadrupole Resonance (NQR).

主权项

1. A method for detecting a buried explosive object comprising:
disposing one or more radiating element(s) on a moving vehicle; driving at least one of the radiating element(s) with first signal type comprising a wideband swept continuous wave signal; detecting a response; determining a presence of a buried object from the response; and subsequent to determining said presence of a buried object, driving the radiating element(s) or other radiating elements with a second signal type to detecting chemical composition of the object.