Relative position measuring techniques using both GPS and GLONASS carrier phase measurements

A satellite signal receiving system for determining relative position information of at least first and second locations, comprising:

• first and second receivers having respective first and second antennas positionable at respective ones of said at least first and second locations, and
• a signal processor including means responsive to receipt by said receivers of signals from a plurality of satellites over a common time period including at least one GLONASS satellite for forming a metric that depends upon values of the relative position information of at least one of said at least two locations and upon carrier phase measurements of the signals received from said plurality of satellites, and means for determining the values of the relative position information that optimize said metric, thereby to determine the relative position information of said at least two locations.

A satellite signal receiving system for determining relative position information of at least first and second locations, comprising:

• first and second receivers having respective first and second antennas positionable at respective said first and second locations, each of said receivers including means capable of receiving signals within a frequency band of both GLONASS satellite and GPS satellite signals for providing digital data of received GLONASS and GPS signals, and
• a signal processor receiving the GLONASS and GPS digital data that forms therefrom a plurality of double difference phase relationships of carriers of received GLONASS and GPS signals with terms of clock offsets of the first and second receivers and integer ambiguities, solves said double difference phase relationships for fixed value integers, and determines said relative position information by use of the fixed value integers.

A receiver of positioning system satellite signals, comprising:

• a first section tuned to receive signals within a frequency band of GLONASS satellite signals and provide digital data of received GLONASS signals while maintaining their individual frequency characteristics,
• a second section tuned to receive signals of GPS satellites and provide digital data of received GPS signals while maintaining their individual frequency characteristics, and
• a signal processor receiving the digital data of both of the received GLONASS and GPS signals for providing data of observables of individual ones of both GLONASS and GPS signals including carrier phase.