The Landsat 7 Data Users Handbook is prepared by the U.S. Geological Survey (USGS) Landsat Project Science Office at the Earth Resources Observation and Science (EROS) Center in Sioux Falls, SD, and the National Aeronautics and Space Administration (NASA) Landsat Project Science Office at NASA’s Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. The purpose of this handbook is to provide a basic understanding and associated reference material for the Landsat 7 Observatory and its science data products. In doing so, this document does not include a detailed description of all technical details of the Landsat 7 mission but focuses on the information needed by the users to gain an understanding of the science data products. Executive Summary The Landsat 7 Data Users Handbook is prepared by the U.S. Geological Survey (USGS) Landsat Project Science Office at the Earth Resources Observation and Science (EROS) Center in Sioux Falls, SD, and the National Aeronautics and Space Administration (NASA) Landsat Project Science Office at NASA’s Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. The purpose of this handbook is to provide a basic understanding and associated reference material for the Landsat 7 Observatory and its science data products. In doing so, this document does not include a detailed description of all technical details of the Landsat 7 mission but focuses on the information needed by the users to gain an understanding of the science data products. This handbook includes various sections that provide an overview of reference material and a more detailed description of applicable data user and product information. This document includes the following sections: • Section 1 describes the background for the Landsat 7 mission, as well as previous Landsat missions • Section 2 provides a comprehensive overview of the Landsat 7 concept of operations, the Observatory, including the spacecraft, the Enhanced Thematic Mapper Plus (ETM+) instrument, the Landsat 7 ground system, as well as various institutional services • Section 3 provides information on radiometric and geometric instrument calibration, as well as a description of the Calibration Parameter File (CPF) • Section 4 includes information about the Landsat 7 Long-Term Acquisition Plan (LTAP) and documents the changes in data acquisition scheduling since launch • Section 5 includes a description of Level 1 data products and product generation, as well as conversion of Digital Numbers (DNs) to physical units • Section 6 provides an overview of data search and access using various online tools • Appendix A contains a list of known issues associated with Landsat 7 data • Appendix B includes information about the CPF content • Appendix C contains historical information pertaining to Landsat 7 ETM+ and Landsat 5 Thematic Mapper (TM) cross-calibration • Appendix D includes historical information about Level 0 Reformatted (L0R) and Level 1 Reformatted (L1R) data products • Appendix E details the differences between Level 1 Product Generation System (LPGS) and National Land Archive Production System (NLAPS) products
LandSat7 Data Users Handbook v2 (LSDS 1927)