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NDE Project Management NDE Context Diagram  NDE Context Diagram This diagram depicts the NDE system in terms of its relationship to external entities. The external entities and data flows are: The Interface Data Processing Segment (IDPS) � IDPS is an automated system that provides NDE with Data Records from the NPOESS satellites� IDPS will provide four types of Data Record (xDRs). These record types are shown as a single data flow from the IDPS to NDE called �xDRs.� xDR is a summary term for the following data types: Raw Data Record (RDR) � An RDR is the IDPS first phase product. It is a full resolution digital sensor data file, time referenced, with radiometric and geometric calibration coefficients appended, but not applied, to the data. Aggregates (sums or weighted averages) of detector samples are considered to be full resolution data if the aggregation is normally performed to meet resolution and other requirements. [Sensor data will be unprocessed with the following exceptions: time delay and integration, detector array non-uniformity correction (i.e., offset and responsivity equalization), and data compression.) Temperature Data Record (TDR) � A TDR is an intermediate IDPS product created from the application of algorithms to microwave sensor RDRs. It consists of geolocated, antenna temperatures with all relevant calibration data counts and ephemeris data. TDRs also provide an audit trail from the raw data (RDR) to the TDR. Sensor Data Record (SDR) � A SDR is an intermediate IDPS product resulting from the application of an algorithm to non-microwave sensor RDRs. It consists of geolocated and calibrated brightness temperatures/radiances with associated ephemeris data. SDRs provide an audit trail from the raw data (RDR) to the SDR. Environmental Data Record (EDR) � An EDR is the end product of complete IDPS processing. It is a collection of data that represents one or more related environmental variables, generally referenced to the source location. Environmental variables are reported in physically significant units at the source, and geometrically referenced with respect to the Earth or another appropriate coordinate reference system. Intermediate Product (IP) � An IP is produced by the IDPS during the process of generating an EDR. Although not specified in the IORD, a selected group of IPs will be made available as end products on the IDPS. The IDP system is managed by a contractor with government supervision provided by the Integrated Program Office (IPO), which is called the eye-poe.Customers � The NDE project is organized to provide environmental products derived from NPOESS instruments to two categories of customers: civilian users and government organizations. Civilian users are a broad group, encompassing educational institutions, research organizations, industry, and the general public. This category includes foreign governments with whom NOAA has satellite data sharing agreements. Government agencies include the following:
NDE will receive Search and Rescue Satellite Aided Tracking (SARSAT) distress signals from the NPOESS satellites. The signals will be routed to NOAA�s U.S. Mission Control Center (USMCC) in Suitland, Maryland without any tailoring. Outside of NOAA, the primary customers of NPOESS products will be in the Department of Agriculture (DoA), the Federal Aviation Administration (FAA), and the Department of State. NDE will process and respond to various kinds of service requests from Customers. The goal is a smooth and seamless transition into the NPOESS era. Integrated Program Office (IPO) � This is an umbrella management organization with responsibility for providing, launching, and controlling the NPOESS satellites as well as the ground systems necessary for capturing, processing, and delivering the data to NDE. In the context of NDE, the IPO oversees a change control function. It will receive NDE Service Requests and xDR enhancement requirements and will need to respond to NDE Service Requests. Mission Management Center (MMC) � The MMC is managed by a contractor with IPO supervision. It is responsible for the command and control of the NPOESS satellites. Its primary system, the Enterprise Management System, will provide NDE with information about changes to the spacecraft that might influence the values of the data (e.g., calibration and validation). Comprehensive Large Array-data Stewardship System (CLASS) � Comprehensive Large Array-data Stewardship System (CLASS) acquires and develops a long-term archive (LTA) of all NOAA environmental products from its satellites, polar or geostationary, and from in situ sources. In the context of NDE, its mission is to archive NOAA-unique products that NDE has created by augmenting NPOESS products. All of NDE�s system components (source code, documentation, etc.) used in product generation will also be archived to support future reprocessing and research. CLASS will have a separate interface to the IDPS at the NOAA Central for archiving xDRs and associated data. The interface shown in the diagram is solely for NDE�s NOAA-unique products. Joint Center for Satellite Data Assimilation (JCSDA) � The Joint Center supports assimilation of atmospheric products derived from NPOESS satellites into NWS operations more quickly and effectively. In the context of NDE, as NOAA develops algorithms to be used by NDE, they will be provided to the JCSDA to support the development of common algorithms for use by all the NPOESS customers and by the other Centrals. To ensure that operational users are ready and eager to use NPOESS data on day one of its availability, NDE will apprise JCSDA of plans for the introduction of new products. Product Developers � Product Developers are scientists who develop the algorithms that alter the satellite data into forms that are meaningful to NOAA users and can be assimilated into such automated applications as numerical weather prediction models and climate change models. A data flow called �Algorithms� flows from the Product Developers box to the NDE circle in the middle of the diagram. A data flow called �Operational Standards flows from the NDE circle to the Developer box indicating that the scientists accept guidance from NDE about how to alter their algorithms to execute reliably in an operational environment. Management � Management is interested in statistics about system performance, usage, service, and access. These data are stored in the NDE System�s Oracle database. Report generators allow Management to select the kinds of information about which they are interested and the NDE system will, as indicated by the dataflow called �Reports,� provide statistical summaries as requested. |
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