The report includes various positioning technology used in LBS such as GPS, A-GPS, Cell-ID, angle of arrival
, time of arrival, and Wi-Fi.
The last chapter develops a receiver with angle of arrival
and frequency measurement capabilities.
The range estimation measurements can be based on different physical variables: received signal strength (RSS), time of arrival (TOA) or angle of arrival
By using a hybrid Time Difference of Arrival (TDOA), Angle of Arrival
(AOA) technology, and a 30 db improvement in base station location sensitivity, SigmaOne will be able to deliver a system accuracy that exceeds the FCC mandate of 410 feet accuracy (95 percent and beyond), and will allow CDMA carriers to offer a range of location-based services to their customers.
Theoretically, the caller will be found at the intersection of the two lines of the angle of arrival
Analyzing such signals reveals the angle of arrival
, frequency, pulse width, and any characteristics unique to a transmitter.
1 supports handset-based, network-based, and hybrid locating technologies for 2G and 3G access--specifically, cell identity (CID), enhanced-CID, A-GPS, uplink time difference of arrival (U-TDOA) and multiple range estimation location (MREL) on the traffic channel, and angle of arrival
SDR MIMO applications range from defense electronics and RF instrumentation to communications infrastructure and include active antennas, transmit beamforming, receive angle of arrival
systems and open-source SDR development projects.
He gives novices the basic principles and applications of positioning, including signal parameters, basics of location, and navigation systems and then covers the spread spectrum (including acquisition, tracking, measurement of elapsed time and propagation time resolution), time transfer (including calibration constants, range uncertainty and ranging procedure in a wireless network), multicarrier phase management (including estimation of distance), received signal strength (including location methods), time of arrival and time difference of arrival, angle of arrival
(including triangulation and antenna arrays), cellular networks (including location technologies, pattern recognition and systems based on handsets or networks), short-range wireless networks and RFID, and ultra-wideband.
Andrew believes GeoLENs supports the widest range of positioning capabilities available from a single vendor, individually or in combination and on a common platform, including handset-based, network-based, and hybrid locating technologies for 2G and 3G access--specifically, cell identity (CID), A-GPS, enhanced-CID (E-CID), uplink time difference of arrival (U-TDOA) on the traffic channel, multiple range estimation location (MREL) and angle of arrival