By Xiaodong Chen, Clive G. Parini, Brian Collins, Yuan Yao, Masood Ur Rehman
Chapter 1 basics of GNSS (pages 1–19):
Chapter 2 basic concerns for GNSS Antennas (pages 21–40):
Chapter three satellite tv for pc GNSS Antennas (pages 41–53):
Chapter four Terminal GNSS Antennas (pages 55–80):
Chapter five Multimode and complicated Terminal Antennas (pages 81–110):
Chapter 6 Terminal Antennas in tough Environments (pages 111–148):
Chapter 7 Human consumer results on GNSS Antennas (pages 149–180):
Chapter eight cellular Terminal GNSS Antennas (pages 181–206):
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Additional resources for Antennas for Global Navigation Satellite Systems
4 Multipath Propagation Multipath propagation occurs when the receiver picks up signals from the originating satellite that have travelled by more than one path. Multipath is mainly caused by reﬂecting surfaces near the receiver. 3, the satellite signal arrives at the receiver through three different paths, one direct and two reﬂected. As a consequence, the received signals have relative phase offsets, which results in pseudo-range error. The range error caused by the multipath may grow to about 100 m in the vicinity of buildings .
3. L. , Antennas Theory & Design, John Wiley & Sons, Ltd, Chichester, 1981. 4. CST Microwave Studio, User Manual , 2009. 5. R. , Handbook of microstrip antennas, Peter Peregrinus, London, 1989. 6. , Krier, M. , ‘Mobile handset system performance comparison of a linearly polarized GPS internal antenna with a circularly polarized antenna’, Proceedings of IEEE Antennas and Propagation Society International Symposium 2003, Columbus, OH, June 22–27, 2003, Vol. 3, pp. 666–669. 1 Navigation Antenna Requirements This chapter will take an overview of the antenna requirements and design techniques used for the spacecraft segment of the GPS system.
8. 8. The axial (endﬁre) mode is usually used to achieve circular polarisation over a wide bandwidth. To excite this mode, the diameter D and spacing S must be large fractions of the wavelength. 8 Helical antenna geometry. the spacing about λ/4. Most often the helix is fed by a coaxial line and is supported by a ground plane with a diameter of at least λ/2. The helix provides high gain and broad bandwidth, but is large in size, so it is normally used as a transmitting antenna on a satellite, or as a high-gain receiving antenna.
Antennas for Global Navigation Satellite Systems by Xiaodong Chen, Clive G. Parini, Brian Collins, Yuan Yao, Masood Ur Rehman