The present invention relates to systems and methods for measuring signal strength emitted by a wireless portable device to determine the location of the wireless portable device. The wireless portable device may be located within a designated geographical location, premise or facility. The measurement involves two levels of transmissions. A first level involves a user's wireless portable device receiving signals from a plurality of beacons in the vicinity. The second level involves transmission of repeater signals from a mesh network. The payload of these signals, which may include a duress signal, includes the strength of the received beacon signals, so that when the duress signal is received by a controller, the signal strengths of both levels/types of transmissions can be determined. This two-level collection of signals is then processed by a neural network which have been previously trained to classify the signal collections into precise locations.

A travel case includes a case body defining an interior cavity in which to carry articles and an exterior shell; an inflatable floatation aid fixed to the exterior shell; an inflator in communication with the inflatable floatation aid, for inflation of the inflatable floatation aid; and a locator beacon fixed to the exterior shell, including a communications transmitter capable of signaling a remote party and a geo-locating apparatus.

A geolocationing system and method for providing awareness in a multi-space environment, such as a hospitality environment or educational environment, are presented. In one embodiment of the geolocationing system, a vertical and horizontal array of gateway devices is provided. Each gateway device includes a gateway device identification providing an accurately-known fixed location within the multi-space environment. Each gateway device includes a wireless transceiver that receives a beacon signal from a proximate wireless-enabled personal locator device. The gateway devices, in turn, send gateway signals to a server system having a redundant architecture, which determines estimated location of the wireless-enabled personal locator device.

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.

Waveform emission location determination systems and associated methods are described. According to one aspect, a waveform emission location determination system includes a plurality of detectors configured to receive a waveform emitted by a source and to generate electrical signals corresponding to the waveform, processing circuitry configured to access data corresponding to the electrical signals generated by the detectors, use the data to determine a plurality of spheres, and wherein a surface of each of the spheres contains a location of the source when the waveform was emitted by the source, determine an intersection of the spheres, and use the intersection of the spheres to determine the location of the source when the waveform was emitted by the source.

A sympathetic emergency beacon system including a receiver for emergency beacon transmissions and a transmitter to relay transmissions. Personal Locator Beacons (PLBs), Emergency Position Indicating Radio Beacons (EPIRBs), and Emergency Locator Transmitters (ELTs) are used in emergency scenarios to provide location information regarding downed personnel, vessels, or aircraft. These signals notify search and rescue operations of the location of the distress signal. The sympathetic beacon system computes precise position information regarding the received signal and transmits this computed position information to search and rescue operators for more quickly locating the emergency situation. By automatically relaying the distress signal through a plurality of passive receivers, the present invention strengthens the reliability of emergency locating systems.

Systems and methods for determining a location of a mobile computing device requesting emergency services are provided. A mobile computing device may receive an indication of a request for emergency services from a user of the mobile computing device. The mobile computing device may receive a first wireless signal from a first device. The wireless signal may include an indication of a first geographic position associated with the first device. The mobile computing device may determine a location associated with the mobile computing device based on the indication of the first geographic position associated with the first device, and may send the determined location to a provider of emergency services.

Example methods, apparatuses, and/or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate and/or support one or more operations and/or techniques for enhancing searches for positioning reference signals (PRS) via one or more runtime conditions, such as for use in or with mobile communication devices, for example.

A method of adapting determination of location of mobile communication devices. The method comprises receiving and storing the time and self-location of an emergency (e911) call message from a mobile communication device. The method then retrieves the time and self-location information and the trilateration data associated with the mobile communication device that originated the e911 call message. An estimated position is then calculated from the trilateration data by using a trilateration position estimating model. An error is determined between the self-location and the estimated position of the mobile communication device, whereby the self-location is deemed authoritative. The trilateration position estimating model is adapted based on the error determined and then used to determine the position of a second mobile communication device.

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.