HRIT/EMWIN PROTOTYPE RECEIVER
The following links provide access to the data about the Prototype receiver’s hardware design, its software design and the testing performed to verify the receiver meets the performance requirements for the various services: |
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The GOES-R Series will continue the current broadcast services of LRIT (Low Rate Information Transmission) and EMWIN (Emergency Managers Weather Information Network), but will do so at a significantly higher data capacity. This will be accomplished by combining the two services into a single service with a data relay capacity of 400Kbps. This compares with the current LRIT service at 128 Kbps and EMWIN which transmits at 9.6 kbps on the GOES I-M (8-12) series and 19.2 kbps for the GOES-NOP (13-15) series. The new service will be called HRIT/EMWIN—HRIT for High Rate Information Transmission.
With the encouragement from NWS (operator of the EMWIN Program) and NESDIS (operator of the current GOES LRIT service) the GOES-R program undertook a technology demonstration program to show that relatively inexpensive receivers designed for the new service could:
- Support not only HRIT/EMWIN but all of the predecessor services, eliminating costly and disruptive changes to the user systems as the services evolve from the GOES-I-M era, to the GOES-NOP Series, and finally to the GOES-R Series.
- Through the technology of Software Defined Radio, the receiver could consist of a modest amount of hardware (an antenna, low noise amplifier and a computer interface) at very low cost. The bulk of the traditional signal processing, error correction decoding and data recovery and display could be done in a convention personal computer.
- Have a design that is available to all users, hobbiest and manufacturers, with the software available to anyone at no cost.
Additional information about current operational LRIT and EMWIN Services go the following sources:
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