GB/T 41282-2022Validation of fractional vegetation cover remote sensing products (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

Introduction

Vegetation coverage, as one of the important biophysical parameters to describe the surface vegetation coverage, is widely used in vegetation change detection, ecological In the fields of environmental assessment, soil and water conservation monitoring, climate change research, etc., in revealing the distribution law of surface vegetation, grasping the status of ecological environment changes and classifying It is of great significance to analyze its development trend and so on.

The authenticity verification of vegetation coverage products is an important factor in the production of vegetation coverage remote sensing products and the effective application of vegetation coverage remote sensing products.

Support work. This document aims at the common problems in the authenticity test of vegetation coverage remote sensing products, based on the relevant work at home and abroad over the years.

In practice, a set of effective workflows and methods are summarized, taking into account different types, different spatial resolutions, and different temporal synthesis methods.

To standardize the orderly progress of the authenticity inspection of vegetation coverage remote sensing products OK. The implementation of this document will strongly promote the quality improvement and quantitative application of vegetation coverage remote sensing products. Verification of authenticity of remote sensing products of vegetation coverage

1 Scope

This document specifies the basic requirements, inspection methods and inspection reports for the authenticity inspection of vegetation coverage remote sensing products.

This document is applicable to the authenticity test of terrestrial vegetation coverage products of optical satellite remote sensing images, and vegetation produced by using other data sources. Coverage products can also be compared to this document.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 36296-2018 Guidelines for the authenticity inspection of remote sensing products

GB/T 39468-2020 General method for authenticity inspection of terrestrial quantitative remote sensing products

3 Terms and Definitions

The terms and definitions defined in GB/T 36296-2018 and GB/T 39468-2020 and the following terms and definitions apply to this document.

4 Basic requirements

The authenticity inspection of vegetation coverage remote sensing products shall comply with the provisions of Chapter 7 of GB/T 36296-2018, and meet the following requirements.

a) The time of the reference object and the remote sensing product of vegetation coverage to be inspected should be the same or similar, and the similar time should be defined according to the vegetation phenological characteristics.

The difference was no more than 5 days in the stage of stable vegetation growth, and no more than 2 days in the stage of rapid vegetation change. Vegetation coverage to be inspected The time of the remote sensing product is determined in the following way. the time of the single-day vegetation coverage remote sensing product is the product identification time in the metadata (See Table D.1 in Appendix D of GB/T 41280-2022), the time of the multi-day synthetic vegetation coverage remote sensing product is the product assistance