Transponder transmissions may be monitored through a direct, shielded connection of an RF coupler to a transponder antenna cable. The transponder interrogated pressure altitude may quickly change and measuring accurate data including position and pressure altitude is critical. A global positioning system (GPS) may be onboard a universal access transceiver (UAT) and may be utilized to correct the transponder interrogated pressure altitude and position. The UAT may transmit data that may include a corrected pressure altitude and a subsequent position to improve air traffic control radar beacon systems (ATCRBS).

A method for transmitting data from a vehicle to a server. The data transmitted to the server including raw satellite navigation data received by the vehicle from a satellite. The server updates a map based on the raw satellite navigation data.

A method for transmitting data from a vehicle to a server. The data transmitted to the server including raw satellite navigation data received by the vehicle from a satellite. The server updates a map based on the raw satellite navigation data.

A method is implemented by computer for the management of a convoy comprising at least two vehicles, each of the at least two vehicles comprising satellite positioning means and vehicle-to-vehicle communication means, the method comprising the determination of the relative positioning of the vehicles, the determination comprising the measurement of the propagation time of a signal between vehicles by the communication means, the clocks associated with the communication means being synchronized via satellite positioning means at a reference clock time. Developments comprise the communication between the vehicles of various data (e.g. measurement uncertainties, signal-to-noise ratios, residual values), the determination of absolute locations, the use of an SBAS-type system, the use of differential GPS, the use of Doppler measurements for the turns or even the exclusion of a failing satellite. A computer program product and associated systems are described.

A method is implemented by computer for the management of a convoy comprising at least two vehicles, each of the at least two vehicles comprising satellite positioning means and vehicle-to-vehicle communication means, the method comprising the determination of the relative positioning of the vehicles, the determination comprising the measurement of the propagation time of a signal between vehicles by the communication means, the clocks associated with the communication means being synchronized via satellite positioning means at a reference clock time. Developments comprise the communication between the vehicles of various data (e.g. measurement uncertainties, signal-to-noise ratios, residual values), the determination of absolute locations, the use of an SBAS-type system, the use of differential GPS, the use of Doppler measurements for the turns or even the exclusion of a failing satellite. A computer program product and associated systems are described.

Systems and methods for distributed cooperative localization in a connected vehicular platform are disclosed herein. At a first sensor-rich vehicle, one embodiment receives, from a second sensor-rich vehicle via direct vehicle-to-vehicle (V2V) communication, an estimated location of the first sensor-rich vehicle and an associated confidence level; estimates a location of the second sensor-rich vehicle based on first sensor data and assigns a confidence level to the estimated location; transmits to the second sensor-rich vehicle via direct V2V communication, the estimated location of the second sensor-rich vehicle and the assigned confidence level; accepts, based on communication between the first and second sensor-rich vehicles and predetermined acceptance criteria, an assignment to perform localization for a legacy vehicle; estimates a location of the legacy vehicle based on second sensor data; and transmits, to the legacy vehicle, the estimated location of the legacy vehicle.

A method and apparatus for processing navigational signals with reduced bandwidth by receiving a combination of two navigational signals, reducing the frequency of the combined two navigational signals to an intermediate frequency (IF); converting the IF signal to digital signals; translating the frequency of the IF signal to near baseband; filtering the near baseband signal; reducing the sample rate of the filtered near-baseband signal by a factor; translating a selection of the reduced, filtered, near-baseband signal to a single sidelobe; storing the single sidelobe in memory; and processing the single sidelobe for navigational purposes.

A system of one or more computers configured to perform particular operations or actions by virtue of having software, firmware, hardware, or a combination of them installed on the system that in operation causes or cause the system to perform the actions. One general aspect includes a first computer having a processor and a memory, the memory storing instructions executable by the processor such that the first computer is programmed to send parameters describing a target passenger to a mobile drone. The system instructs said drone to circumnavigate an area while searching said area for the target passenger with an image capturing device. The system receives communications from the drone and confirms a match to the target passenger and instructs the drone to guide the target passenger to a destination.

Systems and methods for requesting and providing assistance data for a satellite positioning system are described herein. A method as described herein includes receiving, at a base station over a wireless communication link, a first message from a mobile station, wherein the first message comprises a first field identifying requested assistance data associated with a first Satellite Positioning System (SPS) and a second field identifying a requested format of the requested assistance data, and wherein the requested assistance data are available in a plurality of formats that includes the requested format; and transmitting a second message from the base station to the mobile station over the wireless communication link, wherein the second message includes the requested assistance data in the requested format.

Systems and methods for requesting and providing assistance data for a satellite positioning system are described herein. A method as described herein includes receiving, at a base station over a wireless communication link, a first message from a mobile station, wherein the first message comprises a first field identifying requested assistance data associated with a first Satellite Positioning System (SPS) and a second field identifying a requested format of the requested assistance data, and wherein the requested assistance data are available in a plurality of formats that includes the requested format; and transmitting a second message from the base station to the mobile station over the wireless communication link, wherein the second message includes the requested assistance data in the requested format.