System and method for non-contact identification of a passive target

摘要

A system and method includes a laser transmitter configured to form a transmitted laser beam and a laser receiver configured to receive a reflected beam based on the transmitted laser beam. An identification (ID)-filter includes a substrate, a retarder filter and a reflector, where the transmitted beam passes through the retarder filter and is reflected back through the retarder filter in an opposite direction, to the laser receiver. A processor connected with a memory executes instructions stored in the memory to determine polarization properties of the reflected beam with respect to the transmitted laser beam to determine an address of the ID-filter.

主权项

1. A system, comprising:
a first laser transmitter configured to form a first transmitted laser beam with a first wavelength; a second laser transmitter configured for a second transmitted laser beam with a second wavelength different from the first wavelength; a first laser receiver; a second laser receiver; an identification (ID)-filter including a retarder filter, a first reflector, a linear polarizer, and a second reflector, wherein the ID-filter is arranged such that the first transmitted laser beam passes through the retarder filter and is reflected by the first reflector towards the first laser receiver through the retarder filter to generate a first reflected laser beam and the second transmitted beam passes through the linear polarizer and is reflected by the second reflector towards the second laser receiver through the linear polarizer to generate a second reflected laser; and a processor connected with a memory, the processor configured to execute instructions stored in the memory to determine polarization properties of the reflected beam with respect to the first transmitted laser beam to determine an address of the ID-filter and to process the second reflected laser to determine an orientation of the retarder filter for processing the first reflected laser beam to determine the address.