Systems and methods for selective and/or opportunistic GNSS/GPS navigation that actively mask or filter satellite signals based on identified “clear sky” or “obstructed sky” regions.

A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.

A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.

An approach is provided for increased accuracy for a positioning receiver in a multipath signal environment. The approach, for example, involves receiving real-time imagery data collected using one or more sensors. The real-time imagery data, for instance, depicts a geographic environment in which the positioning receiver is operating. The approach also involves processing the real-time imagery data to dynamically generate a mask angle. The approach further involves blocking one or more signals from one or more navigation satellites received at the positioning receiver using the mask angle. The approach further involves determining positioning data using the positioning receiver based on the blocking of the one or more signals.

An approach is provided for increased accuracy for a positioning receiver in a multipath signal environment. The approach, for example, involves receiving real-time imagery data collected using one or more sensors. The real-time imagery data, for instance, depicts a geographic environment in which the positioning receiver is operating. The approach also involves processing the real-time imagery data to dynamically generate a mask angle. The approach further involves blocking one or more signals from one or more navigation satellites received at the positioning receiver using the mask angle. The approach further involves determining positioning data using the positioning receiver based on the blocking of the one or more signals.

A method for the satellite-supported determination of a position of a vehicle includes identifying a plurality of satellites which may be usable for determining a position of a vehicle and receiving data which characterize movable reception obstacles in a vicinity of the vehicle. The method includes determining a reduced selection of satellites from the plurality of satellites, based on the received data, and determining the position of the vehicle using signals which have been transmitted from the reduced selection of satellites.

A method for the satellite-supported determination of a position of a vehicle includes identifying a plurality of satellites which may be usable for determining a position of a vehicle and receiving data which characterize movable reception obstacles in a vicinity of the vehicle. The method includes determining a reduced selection of satellites from the plurality of satellites, based on the received data, and determining the position of the vehicle using signals which have been transmitted from the reduced selection of satellites.

A GNSS spoofing signal detection/elimination includes tracking acquired candidate GNSS signals for each target GNSS signal, identifying the acquired candidate GNSS signals as authentic, unauthenticated, or counterfeit, removing the counterfeit GNSS signal(s) from tracking, generating a first list of the authentic GNSS signals and a second list of unauthenticated candidate GNSS signals, creating a plurality of sets of GNSS signals by selecting at least four GNSS signals from among the first list and the second list, such that each set includes all of the authentic GNSS signals, if any, and at least one unauthenticated candidate GNSS signal such that each set includes only one candidate signal per target GNSS signal, calculating PVT solutions and post-fit residuals for each set, thereby obtaining a plurality of estimated solutions, estimating authenticity of unauthenticated GNSS signals by analyzing the plurality of estimated solutions.

A system for locating an optimal location of a reception antenna that has an unmanned aerial vehicle (UAV), a wireless internet service provider (WISP) tower configured for transmitting radio signals, and an antenna removably coupled to the unmanned aerial vehicle, the antenna configured for receiving the radio signals. Further, the system has a processor for automatically flying the UAV to a height, for rotating the unmanned aerial vehicle at the height and detecting the radio signals from the at least one WISP tower as the UAV rotates to determine an optimal azimuth, and if the radio signals received are not conducive for the provision of wireless services at the height, the processor moves the UAV to different heights and rotates the UAV until radio signals received are conducive for the provision of wireless services thereby determining an optimal azimuth and location altitude range for a reception antenna.

A system for locating an optimal location of a reception antenna that has an unmanned aerial vehicle (UAV), a wireless internet service provider (WISP) tower configured for transmitting radio signals, and an antenna removably coupled to the unmanned aerial vehicle, the antenna configured for receiving the radio signals. Further, the system has a processor for automatically flying the UAV to a height, for rotating the unmanned aerial vehicle at the height and detecting the radio signals from the at least one WISP tower as the UAV rotates to determine an optimal azimuth, and if the radio signals received are not conducive for the provision of wireless services at the height, the processor moves the UAV to different heights and rotates the UAV until radio signals received are conducive for the provision of wireless services thereby determining an optimal azimuth and location altitude range for a reception antenna.