A multi-element double ring detector which can track a target effectively under infrared (IR) countermeasure conditions is presented. Dual band IR counter-countermeasures can be performed by the detector to distinguish the target from target–flare mixed signals. Middle and short IR wavelengths are used for target and IR countermeasure detection, respectively. With a special design, unique dual band signals will be outputted by the detector when a target spot is located on the center of the detector. By comparison, the typical single element ring detector has a “dead spot” in this case, which is undesirable for target identification. Relatively high tracking accuracy and low cost indicate that the presented method has a potential application.
© 2014 Optical Society of America
Original Manuscript: March 27, 2014
Revised Manuscript: May 7, 2014
Manuscript Accepted: May 7, 2014
Published: June 10, 2014
Mo Li, Weiguo Sun, Liang Zhang, and Xubo Zhu, "Multi-element double ring detector for dual band infrared counter-countermeasure," Appl. Opt. 53, 3753-3757 (2014)