GB/T 41449-2022 in English

VALID

Quality inspection and evaluation of time-series satellite image data

Issued on:2022-04-15
Implemented on:2022-04-15
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $310.00
$301.00

Standard No:	GB/T 41449-2022
Document status:	VALID
Title in English:	Quality inspection and evaluation of time-series satellite image data
Title in Chinese:	时序卫星影像数据质量检查与评价
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2022-04-15
Implemented on:	2022-04-15
ICS Classification:	07.040-Astronomy. Geodesy. Geography
Professional Classification:	GB-National Standard
Related Topics:	data quality satellite data When xps data wavelength check satellite imagery image price check Reagent Quality Check data check Reagent Quality Check timing Check evaluation time image Central Evaluation Quality Inspection data quality Sequencer data volume satellite data Test data evaluation satellite imagery mass quantum mass quantum cod timing data Test data evaluation Check method Check evaluation time polarization satellite number and quantity Spectrum inspection Sequencing data volume + sample volume Double evaluation data Satellite Data Parameters quality inspection Test data evaluation Evaluate 2 data satellite energy wavelength check satellite energy Evaluation of measurement data Data inspection and evaluation previous satellite images GBT41449 GB/T 41449-2022 Imager calibration Photosensitive quality check Data quality standards Satellite data aggregation

《GB/T 41449-2022时序卫星影像数据质量检查与评价》由TC230（全国地理信息标准化技术委员会）归口，主管部门为自然资源部(测绘地理)。

Introduction

In-depth analysis of key technical dimensions

Quality element detection framework

Data type	Quality element	Key indicator	Detection threshold
Time series optics	Radiation quality	Signal-to-noise ratio ≥35dB	Measured fluctuation value ≤5%
	Time quality	Time baseline ≤15 days	Band standard deviation <0.05μm
	（Excerpt from sample entry）

Description of innovative evaluation model

Technological innovation in indicator dimension

Hybrid evaluation framework: Hierarchical design of basic items + characteristic items + extended items three-in-one detection system
Dynamic weight mechanism: Dynamic coupling algorithm optimization of quality parameters based on different application scenarios

Precautions for engineering practice

(I) Key points for sampling implementation

Set proportional sampling parameters according to the average altitude of the project area to ensure that the environmental gradient coverage rate is ≥85%

(II) Conflict resolution principles

When the polarization channel compatibility F value is greater than 0.3, the timing phase data supplementary perfusion processing is performed first

More samples: QC/T 942-2021 DL/T 5154-2012 NB/T 47013.2-2015

Sample only — not a preview of GB/T 41449-2022

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