Abstract: A method can include receiving satellite observations, determining GNSS corrections, monitoring the GNSS corrections, transmitting the GNSS corrections and monitor result, and determining a GNSS receiver positioning solution.

Abstract: A system or method for determining a satellite observation for a virtual reference station can include: determining a virtual reference station location, receiving a set of satellite observations at a reference station located at a reference station location, determining a first GNSS correction for the virtual reference station location and a second GNSS correction for the reference station location, and determining the satellite observation for the virtual reference station by combining the set of satellite observations, the first GNSS correction, and the second GNSS correction.

Abstract: A system or method for determining a satellite observation for a virtual reference station can include: determining a virtual reference station location, receiving a set of satellite observations at a reference station located at a reference station location, determining a first GNSS correction for the virtual reference station location and a second GNSS correction for the reference station location, and determining the satellite observation for the virtual reference station by combining the set of satellite observations, the first GNSS correction, and the second GNSS correction.

Abstract: A method for calculating a position of a mobile device relative to a selected reference station of a plurality of reference stations, the method comprising: receiving satellite signal measurements associated with a first reference station; receiving location signals from a plurality of satellites; tracking a baseline between the mobile device and the first reference station using the satellite signal measurements associated with the first reference station and the location signals to provide the position of the mobile device relative to the first reference station; sending a handover request, the handover request comprising the current position of the mobile device; receiving a handover message comprising integer ambiguities for a baseline between the first reference station and the second reference station; initialising tracking of a baseline between the mobile device and the second reference station using the integer ambiguities of the handover message; receiving satellite signal measurements associated wit

Abstract: A photocomposition system for composing typeface characters on a CRT display using a magnetic font disc formed of plural variable length character sectors wherein each sector includes successive storage cells containing all of the coded signals necessary to describe a single character image which signals may be retrieved and decoded for use by the CRT to create an optical image of the character. An optical scanner system is disclosed for optically determining the coordinate points on the boundary of an original character design for subsequent encoding into successive 3 bit binary codes representing successive end to end translational movements along the boundaries of the character design being encoded. The translational movements are selected from a subset of a total of 24 possible translational paths wherein the paths making up the subset is continually varying dependent on the general direction of the previous translational path.

Abstract: Apparatus and methods for photocomposing as, for example, phototypesetting utilize photographic film on a moving member such as a rotatable cylinder with an array of multitudinous light emitting diodes movable along the length of the cylinder to project to the film an image of graphic information to be recorded on the film. The array moves to scan the film with overlap between one scan and the next to merge images of one scan into images of the next scan with a minimum of discontinuity. Overlapping exposures from individual LEDs further increase sharpness of image and substantially eliminate variations from non-uniformities of the individual LEDs.

Abstract: A photocomposition system for composing typeface characters on a CRT display using a magnetic font disc formed of plural variable length character sectors wherein each sector includes successive storage cells containing all of the coded signals necessary to describe a single character image which signals may be retrieved and decoded for use by the CRT to create an optical image of the character. An optical scanner system is disclosed for optically determining the coordinate points on the boundary of an original character design for subsequent encoding into successive 3 bit binary codes representing successive end to end translational movements along the boundaries of the character design being encoded. The translational movements are selected from a subset of a total of 24 possible translational paths wherein the paths making up the subset is continually varying dependent on the general direction of the previous translational path.

Abstract: A photocomposition system for composing typeface characters on a CRT display using a magnetic font disc formed of plural variable length character sectors wherein each sector includes successive storage cells containing all of the coded signals necessary to describe a single character image which signals may be retrieved and decoded for use by the CRT to create an optical image of the character. An optical scanner system is disclosed for optically determining the coordinate points on the boundary of an original character design for subsequent encoding into successive 3 bit binary codes representing successive end to end translational movements along the boundaries of the character design being encoded. The translational movements are selected from a subset of a total of 24 possible translational paths wherein the paths making up the subset is continually varying dependent on the general direction of the previous translational path.