1
Michael Timo Allison, Mark Nichols, James L Sorden: Location and generation of high accuracy survey control marks using satellites. Trimble Navigation, John F Schipper, April 14, 1998: US05739785 (119 worldwide citation)

A method for accurately determining the location of a pre-selected survey or construction mark, or for accurately identifying the survey position for a new mark with pre-selected location coordinates. A Satellite Positioning System (SPS), such as GPS or GLONASS, with at least two SPS stations (anten ...


2
Geoffrey R Kirk, Michael Timo Allison, Paul Skoog, Ian Timothy Viney: Automatic event recognition to trigger recording changes. Trimble Navigation, Blakely Sokoloff Taylor & Zafman, June 29, 1999: US05916300 (58 worldwide citation)

A method and apparatus for automatic event detection and processing is provided. A positioning system receiver includes a position measurement device and a logging device. The position measurement device is configured to receive and process signals from a positioning system. The logging device is co ...


3
Nicholas Charles Talbot, Michael Timo Allison, Mark Edward Nichols: Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control. Trimble Navigation, Blakely Sokoloff Taylor & Zafman, March 30, 1999: US05890091 (49 worldwide citation)

A system embodiment of the present invention comprises a fixed and a roving pair of four-observable GPS receivers and a communication link between them for double differencing code and carrier measurements. Carrier phase integer ambiguities are resolved efficiently by searching the simultaneous narr ...


4
Manfred Dieter Martin Sever, Michael Timo Allison: Enhanced GNSS signal processing. Trimble Navigation, Bruce D Riter, June 2, 2009: US07541975 (40 worldwide citation)

In accordance with embodiments of the invention, a skyward-looking sensor enables classification of points in its hemispherical field of view as either sky, partial sky or not sky, which in turn enables determination from data supplied by the GNSS receiver of whether each satellite in the GNSS anten ...


5
Boris G Tankhilevich, Michael Timo Allison: Monitor and remote control via long baseline RTK. Trimble Navigation, Boris G Tankhilevich, March 6, 2001: US06198989 (35 worldwide citation)

A method and a system for remote control of a rover over a long base line is disclosed. The system includes a primary base station (PBS), a secondary base station (SBS), a rover, a primary long line data link between PBS and SBS, and a secondary two-way data link between the SBS and the rover. The p ...


6
Geoffrey R Kirk, Michael Timo Allison, Ian Viney, Paul N Skoog: Automatic transference between real-time operation and post-processing in a GPS survey system. Trimble Navigation, Thomas E Law Offices of Thomas E Schatzel A Prof Corporation Schatzel, November 24, 1998: US05841026 (29 worldwide citation)

A centimeter level survey system includes reference base station and rover GPS units connected by a radio data link. Each includes recorders for the storage of raw measurement information including range, phase, cycle counts and time information. The rover unit is typically moved to points of intere ...


7
Michael Timo Allison, Mark Nichols, James L Sorden: Location and generation of high accuracy survey control marks using satellites. Trimble Navigation, William E Pelton Esq, October 16, 2001: US06304210 (24 worldwide citation)

A first position determining device at a known position transmits a data signal identifying the known position. A second position determining device is responsive to the data signal and movable to a position near but displaced from a survey point. The position of the second position determining devi ...


8
Michael Timo Allison, Ann Ciganer: Long baseline RTK using a secondary base receiver a non-continuous data link and a wireless internet connectivity. Trimble Navigation, Boris G Tankhilevich, January 14, 2003: US06507738 (24 worldwide citation)

The system and method for long baseline RTK survey are disclosed. The system includes a primary base station (PBS), a secondary base station (SBS), a primary data link between the PBS and the SBS, and a secondary data link between the SBS and a rover. The PBS, the SBS, and the rover are equipped wit ...


9
Nicholas Charles Talbot, Michael Timo Allison, Mark Edward Nichols: Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control. Trimble Navigation, Blakely Sokoloff Taylor & Zafman, May 26, 1998: US05757646 (22 worldwide citation)

A system embodiment of the present invention comprises a fixed and a roving pair of four-observable GPS receivers and a communication link between them for double differencing code and carrier measurements. Carrier phase integer ambiguities are resolved efficiently by searching the simultaneous narr ...


10
Michael Timo Allison, Christopher Haosan Wei: Renting/leasing instrument options using satellite positioning system. Trimble Navigation, Boris G Tankhilevich, April 4, 2000: US06047258 (14 worldwide citation)

An apparatus and a method of purchasing or leasing the time dependent option of operation of an instrument are disclosed. An apparatus generates and uses a time dependent password configured to be matched with at least one time dependent parameter in order to activate the instrument. The apparatus i ...