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Supervisory control and data acquisition (SCADA) is a unique aspect of oil and gas operations in that it does not entail communication between people, but between machines, also known as machine–machine (M2M). Due to the critical nature of most SCADA operations, a reliable communication solution is of utmost importance. The satellite communications industry is mature with a proven track record. Satellite transponder availability is typically in the 99.99 percentile range, a number far superior to that of terrestrial networks. To increase the reliability of a TSAT hub, it is frequently deployed in a redundant/load sharing configuration. This ensures that the hub is available more than 100% of the time, making it far from the weakest link in the communication chain. VSAT shared hub services are being promoted for the SCADA applications environment. With this type of solution, multiple customers share the same frequency spectrum. From a security perspective this may not be a desired solution. Furthermore, as previously mentioned data, to/from the RTUs are routed through the service providers hub facility. In most cases the connection to the service providers hub is through a dedicated (leased) line. Most SCADA applications involve placing the satellite terminals in unforgiving, harsh environments. The low cost satellite terminals targeting the small office/home office (SOHO) market are designed to operate in a
sheltered environment.
Tags : satellite communications industry, supervisory control and data acquisition, hub services, soho market, scada applications, small office home office soho, security perspective, communication chain, harsh environments, satellite terminals, frequency spectrum, satellite transponder, terrestrial networks, gas operations, reliable communication
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