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- W2006877897 abstract "Multipath interference limits the speed and accuracy of determining position by differential Global Positioning System (DGPS) techniques. A geodetic surveyor for example, requires multipath interference rejection of about 36+20log/sub 10/sin/spl epsiv/ dB, where /spl epsiv/ is the elevation angle of the satellite being observed. Signal processing in a GPS receiver cannot satisfy this requirement. A receiving antenna is required that can sufficiently reject signals arriving from below the horizon. Available antennas have inadequate rejection, and brute-force methods of improving them, e.g., by enlarging their ground-planes, are impractical. A compact, ground-planeless, dual-band GPS antenna with improved multipath rejection has been designed and field-tested. This antenna resembles a vertical post rather than a horizontal platter; within its 0.1-m diameter, 0.4-m tall randome is a vertical array of turnstile elements. In field tests, a three-element array antenna rejected multipath better than a 0.5-m diameter ground-plane antenna by an average of 5 dB. A five-element array antenna appears superior to a 0.9-m diameter ground-plane antenna." @default.
- W2006877897 created "2016-06-24" @default.
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- W2006877897 date "1999-01-01" @default.
- W2006877897 modified "2023-09-30" @default.
- W2006877897 title "Multipath-rejecting GPS antennas" @default.
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- W2006877897 doi "https://doi.org/10.1109/5.736343" @default.
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