4 research outputs found
A new method to mitigate multipath error in single-frequency GPS receiver with wavelet transform
No full text
Antennas
No full textThe basic purpose of a global navigation satellite
system (GNSS) user antenna is the reception of
navigation signals from all visible GNSS satellites.
Transmit antennas onboard the GNSS satellites,
on the other hand, are quite different and employ
large antenna arrays to create high-gain
global beams illuminating the entire surface of
the Earth.
This chapter presents different design options
for GNSS antennas operating in the L-band of the
radio frequency spectrum. It starts with a brief discussion
of key requirements for the GNSS receiving
antenna, where several design parameters are introduced
and explained. Thereafter, antennas of
different design technologies suitable to GNSS are
explored and discussed in detail. Following the
introduction of major antenna candidates, different
variants for specialized requirements, such
as the small form factor or multipath mitigation
are presented. Complementary to receiving antennas,
the design of antenna arrays for signal
transmission on the GNSS satellites is presented
next, along with a discussion on specific antennas
employed on the Global Positioning System
(GPS), Galileo, Global’naya Navigatsionnaya Sputnikova
Sistema (GLONASS) and BeiDou satellites.
Finally, a comprehensive discussion on antenna
measurements and the performance evaluation is
provided
