A method of measuring a satellite signal includes: receiving, at an apparatus, the satellite signal; determining, at the apparatus, a first code phase of the satellite signal, corresponding to a first time period, based on a first portion of the satellite signal that has a first bandwidth; determining, at the apparatus, a second code phase of the satellite signal, corresponding to a second time period, based on a second portion of the satellite signal that has a second bandwidth, where the second bandwidth is larger than the first bandwidth, and where the second time period is separate from the first time period; and determining, at the apparatus, a carrier phase of the satellite signal based on the first portion of the satellite signal and a third portion of the satellite signal that has the first bandwidth and spans the second time period.

A method and system to determine the position of a moveable platform relative to an object is disclosed. The method can include storing one or more synthetic models each trained by one of the one or more synthetic model datasets corresponding to one or more objects in a database; capturing an image of the object by one or more sensors associated with the moveable platform; identifying the object by comparing the captured image of the object to the one or more synthetic model datasets; generating a first model output using a first synthetic model of the one or more synthetic models, the first model output including a first relative coordinate position and a first spatial orientation of the moveable platform; and generating a platform coordinate output and a platform spatial orientation output of the moveable platform at the first position based on the first model output.

A method and system to determine the position of a moveable platform relative to an object is disclosed. The method can include storing one or more synthetic models each trained by one of the one or more synthetic model datasets corresponding to one or more objects in a database; capturing an image of the object by one or more sensors associated with the moveable platform; identifying the object by comparing the captured image of the object to the one or more synthetic model datasets; generating a first model output using a first synthetic model of the one or more synthetic models, the first model output including a first relative coordinate position and a first spatial orientation of the moveable platform; and generating a platform coordinate output and a platform spatial orientation output of the moveable platform at the first position based on the first model output.

A method for searching for a target object, which is moved along a path, by a measuring device which has a first reference system, a control device, and an operating controller which has a GNSS receiver having a second reference system and which is connectable to the measuring device via a communication connection.

A method for searching for a target object, which is moved along a path, by a measuring device which has a first reference system, a control device, and an operating controller which has a GNSS receiver having a second reference system and which is connectable to the measuring device via a communication connection.

A satellite positioning receiver includes a local oscillator, a front-end circuit with having an analog mixer, a number of signal processing channel circuits, and a processing circuit. The satellite positioning receiver performs a method that includes (i) acquiring a first satellite using a first frequency search space that spans both uncertainties due to the first satellite's orbit and uncertainties due to the clock bias or a time rate of change of the bias; and (ii) using the bias or the time derivative of the bias determined during the acquisition of the first satellite, acquiring a second satellite using a second frequency search space that spans substantially only uncertainties due to the second satellite's orbit.

A satellite positioning receiver includes a local oscillator, a front-end circuit with having an analog mixer, a number of signal processing channel circuits, and a processing circuit. The satellite positioning receiver performs a method that includes (i) acquiring a first satellite using a first frequency search space that spans both uncertainties due to the first satellite's orbit and uncertainties due to the clock bias or a time rate of change of the bias; and (ii) using the bias or the time derivative of the bias determined during the acquisition of the first satellite, acquiring a second satellite using a second frequency search space that spans substantially only uncertainties due to the second satellite's orbit.

In an embodiment, a method monitors, within a global navigation satellite system (GNSS) limited zone, an intra-zone location of a vehicle having a GNSS receiver, the intra-zone location being within the limited zone. The method determines a simulated intra-zone location of the vehicle based on the intra-zone location monitored to calculate a likely location of the vehicle. The method calculates a global location of the vehicle based on the intra-zone location and the location of the GNSS limited zone within a global network of limited zones. The method broadcasts, from a transmitter within the GNSS limited zone, a GNSS signal representing the global location of the vehicle.

In an embodiment, a method monitors, within a global navigation satellite system (GNSS) limited zone, an intra-zone location of a vehicle having a GNSS receiver, the intra-zone location being within the limited zone. The method determines a simulated intra-zone location of the vehicle based on the intra-zone location monitored to calculate a likely location of the vehicle. The method calculates a global location of the vehicle based on the intra-zone location and the location of the GNSS limited zone within a global network of limited zones. The method broadcasts, from a transmitter within the GNSS limited zone, a GNSS signal representing the global location of the vehicle.

A method is provided for acquiring a signal from a satellite in a global navigation satellite system. The signal includes a pseudorandom code. The method includes, for each time period of a plurality of time periods: generating samples of the signal, segments of the samples of the signal are correlated with a local copy of the pseudorandom code, thereby producing correlation values for the time period. A discrete Fourier transform is performed using, as inputs, the correlation values for the respective time period, thereby producing a frequency representation of the correlation values for the time period. The frequency representations of the correlation values for the plurality of time periods are combined according to a data hypothesis. When a magnitude of the combined frequency representations meets predefined criteria, a frequency corresponding to the magnitude is selected as a tracking frequency for the satellite.