Study Of Spread Spectrum Signal Receiving Techniques In High Dynamic Environment

The modern Global Navigation Satellite System (GNSS), combining traditional radio navigation and astronomic topography techniques, can provide global, all-weather, consecutive and real-time positioning service; and when applied together with local communication and information systems, it's application has spread into nearly all the possible fields - land, marine, aviation and aerospace and it has now become one of the fastest evolving Information Technologies. At the same time, different satellite systems have been initiated, constructed and put into use, from GPS, GLONASS to the coming Galileo.As the kernel and prerequisite of GNSS application, the development of use receiver is the primary task. The paper takes the newly coming GNSS, or Galileo system, as the main technical background, implements the Galileo user receiver architecture design and studies Galileo signal receiving, acquisition and tracking algorithms under high dynamic environment. The user receiver design covers several technical fields such as spread spectrum communications, software radio and satellite navigation.The contents of this paper cover (1) fundamental principles of spread spectrum communications, satellite positioning theory and BOC/AltBOC modulation theory; (2) E5 band Galileo user receiver architecture design, including RF front end, base band correlation and signal processing algorithms; (3) direct sequence spread spectrum (DS-SS) signal acquisition...