Abstract: Methods and apparatus for detecting a device, such as a cell phone, by transmitting signals in various formats and detecting a response from the device. In general, different devices respond to different signal formats. Upon detecting the device, an alert can be generated.

Abstract: An imaging device including a focal plane array and capable of providing non-uniformity correction (NUC) without using a shutter outside the focal plane array. In one example, the imaging device includes a focal plane array that comprises an array of pixels arranged in rows and columns, the array of pixels corresponding to an imaging area of the focal plane array, the plurality of pixels including a first plurality of imaging pixels and a second plurality of reference pixels. The first plurality of imaging pixels are configured to receive incident electromagnetic radiation from a viewed scene and provide image signals, and the second plurality of reference pixels are shielded from receiving the incident electromagnetic radiation and are configured to produce non-uniformity correction signals.

Abstract: Methods and apparatus for detecting a device, such as a cell phone, by transmitting signals in various formats and detecting a response from the device. In general, different devices respond to different signal formats. Upon detecting the device, an alert can be generated.

Abstract: Presently disclosed are concepts, systems, and techniques directed to augmenting a radar with a plurality of electro-optical (E/O) sensors. The E/O sensors operate in two or more IR bands and have variable range of sensitivities. The outputs from the E/O sensors are correlated to determine and confirm a launch or firing event of a missile, mortar, or similar projectile weapon. From this correlation, time and location of launch/firing may be determined and the radar system alerted to the new threat.