IEEE Std 4003:2021 pdf download.IEEE Standard for Spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R)Data and Metadata Content.
The scope of this effort is to develop a standard for data and metadata content arising from spaceborne global navigation satellite systern-reflectometry (GNSS-R) missions, which uses GNSS signals as signals of opportunity, as described in The IEEE SA Working Group on Spaceborne GNSS-R: Scene Study.” In particular, this standard would provide a means for describing:
a) The terminology assigned to GNSS-R data and products, such as the product levels.
b) The structure and content of the data. This includes, but is not limited to, units of measure, data organization, data description, data encoding, and data storage format.
c) The metadata. This includes and is not limited to metadata, methods and algorithms applied to the data, parameters related to the algorithms, citation information, instrument calibration and characterization, and description of the input signals.
1.2 Purpose
The purpose of this standard is to provide a set of specifications and recommended practices that can he used to describe any known and future spaceborne GNSS-R data set, allowing users to work with different GNSS-R data sets at the same time. The definition of such standard would also allow any sofiware that uses these data to fully operate and ingest any spaceborne GNSS-R input data as they will conform to the same standard.
1.3 Word usage
The word shall indicates mandatory requirements strictly to be followed in order to conform to the standard and from which no deviation is permitted (shall equals is required to).
The word should indicates that among several possibilities one is recommended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required (should equals is reconunezcIed that).
The word mai’ is used to indicate a course of action permissible within the limits of the standard (may equals is permitted to).
The word can is used for statements of possibility and capability, whether material, physical, or causal (can equals is able to).
2. Normative references
The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.IEEE Std 4003 pdf download.