An autonomous bio-inspired mobile robotic device (200) capable of detecting, tracking and communicating location of survivor(s) (34) trapped under earthquake/building collapse debris (30, 32). The small-size, lightweight, ruggedized autonomous legged mobile robot (200) incorporates high-frequency millimeter-wave radar sensor (10) and Ultra Wideband (IR-UWB) radar sensor (12) for detecting presence and perform ranging of trapped survivor(s) (34). The autonomous mobile robot (200) also comprises GNSS (8) and BLE (4) connectivity for location tracking of trapped survivor(s) (34) in conjunction with a Wi-Fi enabled visual sensing solution (20) and a flashlight (16) to aid during rescue operation. The battery-powered (24) autonomous bio-inspired mobile robot (200) also comprises an MCU (26), actuators (14b), motor control circuitry (18) and IMU (6) to control robot (200) locomotion and perform sensor data fusion. BLE (4) connectivity solution of the present invention (200) communicates the location of detected trapped survivor(s) (34) to a plurality of rescue devices (44A, 44B, 44C) using Angle-of-Arrival (700)/Angle-of-Departure (800) method for successful survivor (34) location resolution.

Avalanche transceiver, and associated systems and methods are disclosed herein. In one embodiment, a method for identifying a location of a victim buried in an avalanche includes: emitting a signal by a transmitting transceiver of the victim; receiving the signal by a receiving transceiver; and identifying an orientation from the receiving transceiver to the victim based on constructing a straight line from the receiving transceiver to the transmitting transceiver.

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.

A search apparatus according to the present disclosure includes a transmission unit configured to transmit, at a plurality of sites, a first communication request signal to a terminal; a reception unit configured to receive, from the terminal, a first response signal to the first communication request signal; and a calculation unit configured to calculate an approximate position of the terminal, in which the reception unit receives the first response signal including a time of reception of the first communication request signal by the terminal, and the calculation unit calculates a time difference obtained from a time when the first communication request signal is transmitted and a time when the first communication request signal is received, and calculates the approximate position of the terminal using Observed Time Difference Of Arrival (OTDOA) obtained based on a time difference at at least two of a plurality of sites.

In one embodiment, an apparatus (12) is presented that detects wireless signals from external devices (18) that uniquely identify each of the external devices, records, in memory (30), information about the external devices without access to an external database, and compares information from the external devices to determine a relative location of the wearable device without using additional, power-hungry position location functionality if there is a threshold match in the compared information. In some embodiments, the invention uses the determined relative location to trigger an action at another device. The invention, using self-contained functionality, enables improvements in same location or home location determination accuracy, memory conservation, and power consumption.

A processor enabled method in a mobile device includes configuring a WiFi radio controller of the mobile device with a WiFi service set identifier of a search detector and configuring a Bluetooth connection configuration of a search detector. The method also includes responsive to a rescue trigger, enabling the device to exit a low power mode while awaiting a connection attempt from a Bluetooth radio via the configured Bluetooth connection configuration. The method also includes upon receiving the connection attempt, powering up the WiFi radio and attempting to connect to the configured WiFi service set identifier.

Systems and methods for determining an accurate location of a signal's source of transmission. The methods involve: demodulating a detected carrier signal modulated with a Pseudo Noise (PN) code sequence to obtain an original information-bearing signal therefrom; computing time delay offsets using correlations of PN code windows for each symbol of the original information-bearing signal; determining a high accuracy Time Of Arrival (TOA) of the detected carrier signal using the time delay offsets; and using the high accuracy TOA to determine an accurate location of the original information-bearing signal's source of transmission.

Systems and methods for determining an accurate location of a signal's source of transmission. The methods involve: demodulating a detected carrier signal modulated with a Pseudo Noise (PN) code sequence to obtain an original information-bearing signal therefrom; computing time delay offsets using correlations of PN code windows for each symbol of the original information-bearing signal; determining a high accuracy Time Of Arrival (TOA) of the detected carrier signal using the time delay offsets; and using the high accuracy TOA to determine an accurate location of the original information-bearing signal's source of transmission.

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.

A method and system for estimation of the current location of a remote radio beacon, at a mobile device, based on two historical positions thereof provided via at least two satellite relays and one base station, particularly usable for Search and Rescue. A beacon is configured to periodically transmit short RF signals, relayed by a first satellite payload to a base station, at which the position of the beacon is resolved; then, the base station transmits a message, relayed by a second satellite payload and detectable by a mobile device, encoding two previous positions of the beacon, stamped with time tags. Finally, the mobile device decodes the information about said two previous positions of the beacon, and accordingly estimates the current position of the beacon, accounting for possible different time references.