Related Experiment Video
Updated: Jun 19, 2026
08:57
Improving Infrared Spectroscopy Characterization of Soil Organic Matter with Spectral Subtractions
Published on: January 10, 2019
[Review of digital ground object spectral library]
1Department of Geology, Northwest University, Xi'an 710069, China. zhouxiaohu993@sina.com
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|October 9, 2009
Summary
Developing digital ground object reflectance spectral libraries is crucial for advanced remote sensing. This review covers existing libraries, challenges like standardization, and future directions for spectral database development.
Area of Science:
- Remote Sensing Technology
- Geospatial Data Science
Context:
- Remote sensing applications increasingly depend on detailed ground object spectral characteristics for quantitative analysis.
- Higher spectral resolution is a key driver in advancing remote sensing technology.
Purpose:
- To systematically review the current status and future trends of digital ground object reflectance spectral libraries.
- To highlight the importance of spectral libraries in remote sensing applications.
Summary:
- This article details established spectral libraries, including those for desertification, plants, geology, soil, minerals, atmosphere, water, and man-made materials.
- It identifies challenges such as the lack of uniform national standards, ground object feature consistency, database comparability, and data sharing mechanisms.
Impact:
- Addresses critical issues in spectral database development, aiming to improve data consistency and accessibility.
- Provides recommendations to overcome existing challenges, fostering more robust and integrated spectral data resources for remote sensing.
Related Concept Videos
01:12Taping Over Different Ground Profiles
Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...
01:30Electronic Distance Measuring Instruments
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...
01:13Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...
01:23GIS Software, Hardware, and Sources of GIS Data
A Geographic Information System (GIS) combines specialized software and hardware to effectively manage, analyze, and present spatial and related data. GIS software includes critical functionalities such as a user interface for easy navigation, database management tools for handling spatial and attribute data, and data retrieval features for efficient access. Analytical tools transform raw data into insights, while display functions produce maps and reports in various formats for effective...
01:02Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for electronic transitions. As a result...
01:23Mass Spectrum
A mass spectrum is the graphical representation of the relative abundance of the charged fragments in an analyte plotted against their mass-to-charge ratio (m/z). The plot's x-axis represents the ratio of the mass of the charged fragment to the number of charges it carries. The y axis of the plot represents the relative abundance of each charged species. The relative abundance is calculated from the signal intensity of each charged species recorded at the detector. The most intense signal (the...