Abstract: A multimode tracking device includes a line of site (LOS) antenna; an LOS modem for communicating with other multimode tracking devices and for measuring power of a received signal; a satellite antenna; a satellite modem for communicating with a satellite for receiving and sending text messages, data and commands to and from external devices including a tracking and locating system; a Bluetooth or WiFi Direct interface for communicating with external mobile devices; an inertia measurement unit for providing motion tracking information; a user interface for interfacing with a user; and a processor for generating and displaying a line of bearing to the target on the display, based on the measured power and the motion tracking information. The multimode tracking device tracks assets and personnel and sends/receives text messages, data and commands to/from external devices both over the horizon via the satellite and locally via the LOS modem.

Abstract: An on-board system for location estimation and communication for a vehicle. In some embodiments, the on-board system includes a global navigation satellite system receiver, an inertial sensing system, a wireless receiver, and a processing circuit. The wireless receiver includes at least one of a cellular communications receiver, and a wireless local area networking receiver.

Abstract: A multimode tracking device includes a line of site (LOS) antenna; an LOS modem for communicating with other multimode tracking devices and for measuring power of a received signal; a satellite antenna; a satellite modem for communicating with a satellite for receiving and sending text messages, data and commands to and from external devices including a tracking and locating system; a Bluetooth or WiFi Direct interface for communicating with external mobile devices; an inertia measurement unit for providing motion tracking information; a user interface for interfacing with a user; and a processor for generating and displaying a line of bearing to the target on the display, based on the measured power and the motion tracking information. The multimode tracking device tracks assets and personnel and sends/receives text messages, data and commands to/from external devices both over the horizon via the satellite and locally via the LOS modem.

Abstract: A system and method are provided for maintaining a common consistent database in a primary device and in a secondary device. The method includes the steps of determining a need for a merger of a first database maintained in the primary device and a second database maintained in the secondary device, the first and second databases being derived from common database. The method also includes the steps of merging the first database and the second database, resulting in a merged database and assigning a sequence identifier to the merged database. Finally the present method includes the step of synchronizing the merged database in the primary and secondary devices.