G01S19/423

RTK vector phase locked loop architecture

A system for navigating a mobile object generates satellite navigation data for the mobile object based on satellite navigation signals received from a plurality of satellites and base data received from a stationary base station. The satellite navigation data for the mobile object includes code phase estimates and carrier phase estimates for the plurality of satellites. The system computes position, velocity and time estimates for the mobile object in accordance with the code phase estimates and carrier phase estimates, and performs a navigation function for the mobile object in accordance with the computed position, velocity and time estimates for the mobile object. The system generates the code phase estimates by performing a Vector Delay Locked Loop (VDLL) computation process, and generates carrier phase estimates for the plurality of satellites including by performing a Real-Time-Kinematics Vector Phase Locked Loop (RTK-VPLL) computation process.

Redundant device of piloting sensors for a rotary-wing aircraft
10935672 · 2021-03-02 · ·

A device of piloting sensors for a rotary wing aircraft having at least two IMU inertial modules, at least two GNSS receivers having respective first fault detection and exclusion modules for detecting and excluding failures and covering distinct GNSS satellite navigation systems, at least two second FDE modules, at least two hybridizing platforms, and at least one third FDE module. The FDE modules enable signals that are of integrity and/or signals that are erroneous to be detected so as to exclude each GNSS system that is defective. In addition, each hybridizing platform makes it possible to determine a hybridized ground speed in order to delivering a ground speed for said aircraft that is accurate and of integrity.

UNMANNED AIRCRAFT, AND METHOD AND SYSTEM FOR NAVIGATION
20210035456 · 2021-02-04 ·

An unmanned aircraft navigation system includes a controller and at least one measurement component coupled to the controller. The at least one measurement component includes at least two sensors with one of the at least two sensors being redundant sensor for another one of the at least two sensors. The at least one measurement component is configured to provides data measured by the at least two sensors to the controller.

METHODS FOR ENHANCING NON-GLOBAL NAVIGATION SATELLITE SYSTEM LOCATION AND TIMING PSEUDORANGE POSITIONING CALCULATIONS AND SYSTEMS THEREOF
20200363536 · 2020-11-19 ·

A method, non-transitory computer readable medium, and system that determines for received data from one of a plurality of non-Global Navigation Satellite Systems (non-GNSS) satellites a correction for an error in captured time associated with the one of the non-GNSS satellites. A distance error is calculated based on the determined correction. A calculated pseudorange measurement for the received data from the one of a plurality of non-GNSS satellites is adjusted based on the obtained distance error.

Unmanned aircraft, and method and system for navigation
10825347 · 2020-11-03 · ·

An unmanned aircraft navigation system includes a master navigation device, a slave navigation device, and a controller. The master navigation device includes at least one measurement component. The slave navigation device includes at least one measurement component configured to provide a redundancy support for the at least one measurement component of the master navigation device. The controller is configured to effect a navigation using the at least one measurement component of the master navigation device and the at least one measurement component of the slave navigation device.

SYSTEMS AND METHODS FOR VIRTUAL TRAFFIC LIGHTS IMPLEMENTED ON A MOBILE COMPUTING DEVICE
20200286377 · 2020-09-10 ·

Disclosed herein is an implementation of a Virtual Traffic Lights (VTL) application implemented as an app on a mobile computing device in which online mapping services provide information necessary to determine a lead vehicle among one or more vehicles approaching an intersection. The lead vehicle controls status of virtual traffic lights at the intersection. The information retrieved from in the online mapping service may be used to determine whether vehicles approaching intersection are moving closer or farther apart from each other, the direction of travel of the vehicles, the geographic location of the intersection, and the distance between each vehicle and the geographic location of the intersection.

METHOD AND DEVICE FOR ASCERTAINING A NAVIGATION POSITION OF A NAVIGATION SYSTEM FOR A MOTOR VEHICLE, AND NAVIGATION SYSTEM
20200225362 · 2020-07-16 ·

The invention relates to a navigation system for a motor vehicle for ascertaining a navigation position, having: a plurality of receivers for receiving respective position data of a plurality of different navigation satellite systems, an inertial measuring unit for ascertaining an inertial position of the navigation system, a receiving unit for receiving correction data, an additional receiving unit for receiving certified position data, a device which is coupled to the plurality of receivers, the inertial measuring unit, the receiving unit, and the additional receiving unit so as to transmit signals, wherein the device is designed to ascertain the navigation position on the basis of the position data, the inertial position, the correction data, and the certified position data. The invention additionally relates to a method which can be carried out by the navigation device in particular.

MAINTAINING VEHICLE POSITION ACCURACY

Embodiments include methods, systems and computer readable storage medium for a method for making temporal corrections to position data received a plurality of components. The method includes receiving, by a processor, vehicle location data and a time stamp associated with the vehicle location data from one or more components. The method further includes calculating, by the processor, a time difference between the time stamp and a current time received from the one or more components. The method further includes determining, by the processor, a time offset using the time difference and a distance travelled between the time stamp and an occurrence of the determination for each of the one or more components. The method further includes providing, by the processor, a corrected vehicle location using the time offset for each of the one or more component.

Intelligent satellite exclusion for multipath mitigation based on line of sight

A method of operating a global positioning receiver is provided. The method includes receiving a plurality of signals from a plurality of satellites. At least a measurement from and location of each satellite is determined based on the received plurality of signals. An approximate vehicle velocity vector is determined based on the received plurality of signals. A dot product between a line of sight between each satellite and a vehicle having the receiver and the determined vehicle velocity vector is determined. Each measurement associated with each determined dot product that is below a minimum dot product threshold is removed to obtain a resultant set of measurements. A position solution based on the resultant set of measurements is then determined.

Methods and systems for vehicle position reporting and emergency messaging

Disclosed are methods, systems, and non-transitory computer-readable medium for vehicle information reporting of a vehicle using Global Navigation Satellite System (GNSS) receivers and a satellite communication transceiver for a satellite system. For instance, the method may include obtaining GNSS data to determine position, altitude, speed, track, or vertical rate information for the vehicle; receiving inputs from timers, sensors, or a user interface of the vehicle; determining whether to transmit a message based on rules applied to the obtained GNSS data and the received inputs; in response to determining to transmit the message, compiling the message based on a message content rule, the message being configurable with respect to a maximum size of a radio-determination-satellite service (RDSS) message of the satellite system, the message including an emergency message when the rules indicate an emergency situation; and transmitting the message via the satellite communication transceiver to a satellite of the satellite system.