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Location determination using signals from fewer than four satellites
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System for using differential GPS receivers with autopilot systems for category III precision approaches
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Attitude determination using fewer than three antennas
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Global positioning and communications system and method for race and start line management
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Optimal survey map projection system
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Position and physiological data monitoring and control system for animal herding
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Radio navigation emulating GPS system
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Weighted carrier phase multipath reduction
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Antenna with R-card ground plane
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Optimization of survey coordinate transformations
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Out of plane antenna vector system and method
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WO9521386A1
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Handheld gps/dgps receiver/computer
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WO9518977A1
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A network for code phase differential gps corrections
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System and method for compact storage and transmission of position and residual information usable in differential global positioning
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Signal timing synchronizer
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Distance measuring system of an extendable strip having light reflecting and non-reflecting polygons
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P-code generation
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Microwave communication antenna
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Differential position determination using satellites
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Antenna with curved dipole elements
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