Homogeneously distributed reflecting object classification by radar echo - recognising Mueller matrix of surface reflecting sequential microwave transmissions from sources with different polarisations

摘要

The object (8) is identified from its reflection (7) of microwaves (6) radiated by variously polarised antennas (5) fed from modular oscillators (3) triggered in sequence by a controller (1). The reflection is received by correspondingly polarised antenna and detectors (4) connected to an evaluation unit (2). The characteristic Mueller matrix of the object is worked out from scalar measurements of four reflected Stokes vectors corresp. to an equal number of predetermined different transmitted Stokes vectors using, e.g. one circular and three linear polarisations. USE/ADVANTAGE -In recognition of, e.g. differently constituted or weathered road surfaces, types of vegetation, or land/water boundaries, simple and reliable decisions can be made with monolithically integrable components.