For Difficult Environments, Turkish Construction Firm Selects Ashtech GNSS Receivers

Head-to-head competitive tests under difficult conditions determined the choice

Ankara, Turkey (June 17, 2010) – Aslanlar Insatt, a construction company specializing in infrastructure development, including highways, tunnels, dams, bridges and railways, has chosen the Ashtech® ProMark™ 500 GNSS receiver to meet its GNSS survey needs. Aslanlar engineers compared four well-known brands in a series of head-to-head tests conducted in especially difficult, heavily shaded and multi-path, surroundings. Aslanlar was testing to find the receiver that would give them most precise 3-D coordinates for construction staking. The tests concluded that the Ashtech ProMark 500 consistently and significantly outperformed the competition in both accuracy and precision.
Aslanlar chose to test in particularly difficult environments to ensure good operability under all site conditions, even in the most rugged parts of Turkey. In addition, the company needed the GNSS receiver to map its own deep and steeply sloped quarry in Bandirma, Turkey. Aslanlar tests demonstrated the benefits of Ashtech’s  patented BLADE™ signal processing technology, which provides Aslanlar with the advanced multipath mitigation and high availability of satellites in difficult conditions that they need.  Aslanlar purchased the Ashtech ProMark 500 from Geomatics Ltd, Ashtech’s local dealer in Turkey.
Aslanlar uses the ProMark 500 to receive NTRIP type RTK corrections delivered via cellular GSM modem from the Turkey CORS network. In areas not covered by a GSM signal, such as their deep quarry, Aslanlar employs the ProMark 500 real-time correction bridge (RTC Bridge) to relay GSM/GPRS RTK network corrections to a rover deep in the quarry via a license-free radio. A license-free radio modem, which Aslanlar devised call BlackBox, implements the RTC Bridge function of the ProMark 500 receiver. The RTC Bridge is a real-time network corrections relay that enables a network-connected rover to rebroadcast RTK corrections to multiple rovers via the license-free radio. The RTC Bridge also enables Aslanlar to operate several rovers working in the same area with only one of them connected to the network for a single subscription and communication cost.
About Aslanlar
Aslanar Insaat Ltd. specializes in infrastructure construction projects and has been operating in the construction industry since 1987. Its business scope includes road and highway construction, bridges, leveled crossroads, railways and subways, dams, ponds, waterworks and cut and cover tunnel constructions. The company also operates a mine and produces prefabricated concrete pipes.
About Geomatics Ltd.
Established in 1996, Geomatics Ltd. is the Ashtech survey and GIS GNSS distributor in Turkey. The company offers consultancy and equipment sales services to the survey and construction markets through a large network of 50 resellers in the country. Geomatics is one of the Turkish leading dealers of professional global satellite positioning equipment, navigation devices, total stations, as well as GIS solutions and it support multiple equipment brands.
About Ashtech
Recognized as an industry innovator, Ashtech has been developing GNSS technology for more than 25 years. Ashtech is the creator of BLADE technology, which introduces a unique patented method to the market using multiple GNSS constellations for high-accuracy positioning. Ashtech has also introduced the MobileMapper® series of products for GIS and mapping, as well as the ProFlex 500 and ProMark™ series, including the ProMark 500, ProMark3 RTK and ProMark 3, a well-recognized GNSS Land Survey product line currently on the market. Ashtech S.A.S. is privately held and headquartered in Carquefou, France, with offices in Beijing, China, and Singapore, as well as affiliates in Santa Clara, California (Ashtech LLC) and Moscow (Ashtech A/O LLC). For more information on Ashtech, visit