New Technology and Proven Techniques Combine to Provide Dynamic Precise Positioning

Abstract

A new method of spread spectrum radiolocation offers real-time extraction and correction of system biases to eliminate fixed timing errors. An unlimited number of users may receive differential signals as well as system description data in such a manner as to facilitate complete “blind” entry into the system while attaining full operational capability. Utilizing a proprietary technique, the passive user obtains additional lines of position as well as calibration information while using the traditional number of shore reference stations. A single frequency can be used world-wide since “networks” are identified by code. Adjacent networks can be indicated to the receiver using the system description data thus facilitating network to network operation without operator intervention. Although the system accuracy is excellent for hydrographic survey, the automation of dynamic precise positioning is most advantageous in pilotage and navigation.