Techniques and architectures for providing notifications regarding events, such as hurricanes, tornados, fires, floods, earthquakes, and so on, are discussed herein. For example, a user interface may be displayed with a map of a geographical area, an event visual representation representing an event, and an impact visual representation indicating an impact area where the event is estimated to impact. A request may be received to notify users associated with the impact area and customized notifications may be sent to users associated with the impact area. The customized notifications may be based on policy data for the users.

Devices, methods, systems, and computer-readable media for calculating a distance and direction from a location tracker to a location of a node are described herein. One or more embodiments include a transmit element to transmit a search command for a first node to one or more nodes, a receive element to receive wireless transmissions from the one or more nodes including range data between the location tracker and each of the one or more nodes, and a time of flight (ToF) ranging calculator to convert the range data to a distance measurement from the location tracker to the first node.

Determining an indoor or outdoor location of a mobile device. Particular embodiments described herein determine a geographic area of potential locations in which a mobile device resides, identify any buildings that occupy part of the geographic area, and determine if the mobile device does not reside inside any building, the mobile device resides inside a particular building from the identified buildings, or that one or more of the identified buildings are candidate buildings in which the mobile device may reside based on the geographic area and building footprints of the identified buildings.

The present invention discloses an extendable antenna for a portable communication device, made of two radiating wires each shaped as an open loop; a first loop fixed and a second loop movable between two positions: in parallel or alternatively vertically to the first loop; the parallel position suitable for compactly carrying the device in non-active mode, and the vertical combination configured to produce a substantially isotropic radiation pattern, particularly instrumental for satellite communications. According to one embodiment, this device is a satellite served Personal Locator Beacon (PLB) for Search and Rescue (SAR) of people in distress, configured to be wrist worn.

This disclosure is directed to generating and sending an emergency notification short message service (SMS) message to one or more registered contacts of a user when the user's user equipment (UE) is used to call enhanced 911 (E911). The E911 call may be placed either as a voice over long term evolution (VoLTE) or as a voice over WiFi (VoWiFi) call. The emergency contacts may be previously designated by the user, and saved to a profile associated with the user. When the user calls E911, a gateway mobile location center (GMLC) system may cooperate with one or more other components of a mobile communications network to route the E911 call to a nearby public safety answering point (PSAP) based at least in part on location information of the UE from which the E911 call was placed. This same location information may be provided in the emergency notification SMS message.

Determining an indoor or outdoor location of a mobile device. Particular embodiments described herein determine a geographic area of potential locations in which a mobile device resides, identify any buildings that occupy part of the geographic area, and determine if the mobile device does not reside inside any building, the mobile device resides inside a particular building from the identified buildings, or that one or more of the identified buildings are candidate buildings in which the mobile device may reside based on the geographic area and building footprints of the identified buildings.

A system and method for detecting individuals in a target geographic location, such as a disastrous site, that identifies and locates potential victims using signals from the victims' cell phone utilizes an unmanned aerial vehicle controlled equipped with a retractable antenna component and a core network connection component. The retractable antenna component includes a mobile telephony base station and employs a smart antenna system so as to estimate the direction of arrival of all incoming signals. The core network connection component is operative to establish a wireless communication link with an Internet Protocol based core network of. When a victim's cell phones attempts to connect to the base station in order to access the core network, the location of the cell phone can be determined. The locations can be plotted on a map and based on the distribution of phones on the map, rescue efforts can be optimized.

A system and method for determining a position of a first responder in a building, where the first responder is using a radio, and using a distributed antenna system. Each antenna has a level detector to detect and measure a strength of an input signal from the radio of the first responder to produce a level signal, a time tagger to tag the detected input signal with a timing signal, and a communication module to transmit the level signal and timing signal. A sensor processor connected with a signal distribution network is configured to receive the signal level and timing signal from the signal distribution network of each of the plurality of antennas, to determine the position of the radio relative to each of the plurality of antennas according to the level signal and timing signal.

There are provided a sound source visualization device and method. A sound source visualization device according to an embodiment includes: a sound source detection module configured to detect a sound source signal by using a plurality of sound source detection sensors; a preprocessing module configured to filter out the noise and amplify the sound source signal; a calculation module configured to calculate an approximate sound source location by analyzing the preprocessed sound source signal; a search module configured to generate a plurality of pseudo-planes by using the altitude information, to select planes, and to generate three-dimensional sound source location and altitude information by including information, obtained using the selected planes, in the approximate sound source location; and a visualization module configured to output sound source information to a preset system host or to convert this sound source information into a visualization signal and display the visualized signal.

Firearm discharge location systems and methods are described. According to one aspect, a firearm discharge location system includes a plurality of microphones spaced from one another, timing circuitry configured to generate a plurality of asynchronous timing references, wherein data capture operations with respect to the microphones of a first pair are synchronized with one another using a first of the timing references and data capture operations with respect to the microphones of a second pair are synchronized with one another using a second of the timing references, and processing circuitry configured to use outputs of the first and second pairs of the microphones to identify a location of a firearm discharge.