Patent ID: 6944542

Claim:
A position determination system for personnel members or movable objects comprising: at least one portable position sensor, each said portable position sensor further comprising: an inertial navigation system (INS) module capable of determining its absolute acceleration data adjusted for a local gravitational factor; a portable wireless communication module; and a power source adapted to provide power to said portable position sensor; a high accuracy position determination device capable of determining its position and velocity with high accuracy; and a link between each said portable position sensor and said high accuracy position determination device; wherein said high accuracy position and velocity data provided by said high accuracy position determination device and said acceleration data adjusted for said local gravitational factor provided by at least one said portable position sensor is linked by incorporating said set of high accuracy velocity data provided by said high accuracy position determination gravitational factor provided by at least one said INS module in order to generate a set of absolute velocity data indicative of an absolute velocity of said at least one INS module; and by integrating said set of high accuracy positional data provided by said high accuracy position determination device into said set of absolute velocity data in order to generate a set of INS data including a set of high accuracy absolute positional data indicative of location of said at least one INS module.