Using the Omnistar High Performance Service

The OmniSTAR 8200HP receiver is capable of decimetre-level accuracy (100mm horizontal), because it uses dual frequency GPS signals. The 8200 series subscribes to OmniSTAR’s High Performance service. You may use this HP system with a suitable PDA and software. Package deals for both half-metre and HP 100mm systems. The receiver incorporates many features for flexible operation. The standard 10 Hz position output enables accurate positioning for dynamic or high-speed circumstances. Its rugged, waterproof enclosure protects the receiver in severe weather, and against accidental drops. Since the receiver is CAN Bus (J1939/ISO 11783) compatible, it can be seamlessly integrated with automotive or agricultural CAN Bus compatible equipment. LCD screen A significant advantage of the 8200HP receiver is its front-panel back-lit LCD screen in combination with four operating buttons. You can view and adjust the current receiver settings without connecting to a computer. OmniSTAR HP application Many outdoor sciences require position data, and other input recording techniques. Combining the Windows Mobile or PC operating systems on rugged or standard PDAs or laptops, and the OmniSTAR HP system, the user can collect valuable data quickly. There is no need to set up independent base stations, or radio systems, and there is no reliance on recording for later post-processing by computer. Position accuracy can be monitored and recorded in real time. Depending on the input software being used, many other point and line attributes, can be added with lesser or greater complexity. See below for some software choices. OmniSTAR-HP provides robust and reliable decimetre level (0.1m horizontal) GPS position for Surveying, Geology, Botany, Outdoor and Earth Sciences, Marine Studies, Aviation and Agriculture. OmniSTAR HP service OmniSTAR High Performance (OmniSTAR-HP) is the latest dual frequency GPS augmentation service. It can give precise locations in real time, by reference to virtual points, to form baselines. This data is transmitted directly to the 8200 module from a single satellite.

For GIS field applications, we can supply a combination of hardware and software. Typical users may want either PDA such as HP, or ruggedised PDA, such as the TDS Nomad. Software can range from very basic mapping tools such as Agmapper, Oziexplorer or Fugawi, or more sophisticated data capture programs such as Arcpad or GBM Mobile.

Fugro, the parent company of OmniSTAR, is the first to deliver a wide area network DGPS solution with true decimetre positioning accuracy (95%). The Fugro organisation has many years of experience with wide area GPS solutions, including high precision short range Real Time Kinematic On-the- Fly (RTKOTF) GPS technology. GPS user accuracy is limited by how well the different error sources are known at the user location. Standard DGPS techniques typically combine all errors (orbit, ionosphere, troposphere, clock and multipath) into single range (Prc) and range rate (Rrc) terms. As long as the reference and user GPS receivers see the same errors, then positioning information for the user will be very accurate.

 

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