Coverage
Implemented by innovative technologies, the own network of reference stations of NAVITEQ constantly receives and observes signals form the global navigation satellite systems GPS and GLONASS, and provides business quality of the services offered to the customers.
The precision of the measurements is guaranteed by the specific architecture of the reference network. The experts of NAVITEQ follow strict professional rules in choosing the location of each reference station in order to avoid the influence of interfering signals such as radio and radar signals, or reflected satellite signals.
The network backbone is realized by precise double-frequency 40-channel geodesic GPS and GLONASS receivers, produced by the leader of high-technological equipment Topcon, and the use of specialized antennae (Choke-Ring) counteracts with the effect of the reflected signals (the so called Multipath-effect).
The coordinates of the reference stations of NAVITEQ network are calculated in ITRF 1989 (International Terresrtrial Reference Frame, 1989).
The reservation of the connections and constant monitoring of the network ensure its uninterrupted operation and the high quality of the services offered by NAVITEQ.
Up to the present 5 reference stations have been constructed and set in operation in Sofia, Bobov dol, Velingrad, Varshets and Ribaritsa, ensuring a coverage of over 20% of the territory of the country.
Within this coverage the customers using the services of NAVITEQ may achieve an accuracy of up to a centimeter, depending on the service used.
Towards September 2007, five reference stations have been constructed and set in operation in: Sofia, Bobovdol, Velingrad, Varshets, and Ribaritsa, ensuring a coverage of over 20% of the territory of the country.
The reference network of NAVITEQ continues developing and expanding, and towards the end of 2007 is planned to be added two more GNSS stations that will ensure coverage and high accuracy measurements on the territory of Plovdiv and Varna city.
The precision of the measurements is guaranteed by the specific architecture of the reference network. The experts of NAVITEQ follow strict professional rules in choosing the location of each reference station in order to avoid the influence of interfering signals such as radio and radar signals, or reflected satellite signals.
The network backbone is realized by precise double-frequency 40-channel geodesic GPS and GLONASS receivers, produced by the leader of high-technological equipment Topcon, and the use of specialized antennae (Choke-Ring) counteracts with the effect of the reflected signals (the so called Multipath-effect).
The coordinates of the reference stations of NAVITEQ network are calculated in ITRF 1989 (International Terresrtrial Reference Frame, 1989).
The reservation of the connections and constant monitoring of the network ensure its uninterrupted operation and the high quality of the services offered by NAVITEQ.
Up to the present 5 reference stations have been constructed and set in operation in Sofia, Bobov dol, Velingrad, Varshets and Ribaritsa, ensuring a coverage of over 20% of the territory of the country.
Within this coverage the customers using the services of NAVITEQ may achieve an accuracy of up to a centimeter, depending on the service used.
Towards September 2007, five reference stations have been constructed and set in operation in: Sofia, Bobovdol, Velingrad, Varshets, and Ribaritsa, ensuring a coverage of over 20% of the territory of the country.
The reference network of NAVITEQ continues developing and expanding, and towards the end of 2007 is planned to be added two more GNSS stations that will ensure coverage and high accuracy measurements on the territory of Plovdiv and Varna city.
