A spherical type of antenna should gps signals especially in cities and within buildings more reliable. With the spherical antennas would positioning more accurate, because rondketsende signals are filtered out.
The antennas were developed by the US Air Force Institute of Technology in collaboration with the Australian company Locata Corperation. The latter company has experience with plaatsbepalingstechnologie, in which the antenna technology is based. The antennas, which VRay antennas are called, make use of a technique that is ‘beamforming’. In addition, the signals from different receivers are combined and filtered. The gps signals are not directly, but via detours such as reflections against buildings arrive, are filtered out to a much more accurate signal to generate.
The beamforming VRay-antenna of the Americans and Australians is still a big ball with different antennas. The antennae are in contact with a joint receiver, the cost with similar antennas press: each antenna has its own receiver. With the VRay antenna is the receiver at fixed intervals with another antenna coupled by means of a process that time-multiplexing is called.
Now, it is the design of the Vray little plump, but in the long term should be smaller and cheaper variants to be developed. More vehicles would be using the VRay antennas can be equipped, and their place in cities more accurately able to determine.