Abstract: In one preferred embodiment the present invention will provide a system and method for tracking a plurality of user cell phones within a defined coverage area, including indoor areas of a buildings and/or within sub-surface structures. Such a system will include: at least one cell phone located within a predefined coverage area; a direction finding receiver, comprising a plurality of sensors, for receiving transmissions from the cell phone; and a location server for calculating the position and tracking movement of the cell phone. In another preferred embodiment, the inventive system will further comprise at least one local cell through which the tracked cell phone communicates with a cellular phone network.

Abstract: Systems and methods are disclosed for locating a weapon fire incident such as an acoustic transient from a gunshot, explosion, weapons launch, etc. In one exemplary implementation, there is provided a method of locating the incident from a combination of propagation phenomena including a discharge time of the weapon fire incident. Moreover, the method may include obtaining a first propagation parameter of the incident from one or more first sensors, obtaining the discharge time from another sensor, and processing the data to determine a location using a common time basis among sensor measurements. According to further exemplary implementations, the discharge time may include a transient event that has a different propagation velocity than that of sound in the atmosphere.

Abstract: Systems and methods are disclosed for locating a weapon fire incident such as an acoustic transient from a gunshot, explosion, weapons launch, etc. In one exemplary implementation, there is provided a method of locating the incident from a combination of propagation phenomena including a discharge time of the weapon fire incident. Moreover, the method may include obtaining a first propagation parameter of the incident from one or more first sensors, obtaining the discharge time from another sensor, and processing the data to determine a location using a common time basis among sensor measurements. According to further exemplary implementations, the discharge time may include a transient event that has a different propagation velocity than that of sound in the atmosphere.