Tag Archives: terminology

Triangular Greenness Index (TGI)

Triangular Greenness Index (TGI) is calcultated from the area of a triangle that is defined by 3 points for the reflectance pf wavelength (480nm, R480, 550nm, R550 and 670nm, R670, R= Reflectance of wavelength). The formula for TGI is: TGI = -0.5[190(R670 – R550) – 120(R670 – R480)] Article: U.S. Department of Agriculture: Agricultural ResearchService,

Read More

Drone Laws and Regulations

Below are resources where you can look up drone regulations and other useful drone information. The information found on these sites covers both recreational and commercial drone flying. For A Safer Airspace Master List of Drone Laws: USA States & Country Federal Aviation Administration: Recreational Use Search for more information Here (Last Edit 13 March

Read More

Indirect Measurement

Indirect measurement is typically used in science to ascertain the size of something that can’t actually be measured in a directly quantifiable way. Thus, it is necessary to estimate the desired target size by measurement of a known object or area and extrapolate the unknown value from the known values directly measured. Learn More (Last

Read More

Fog Computing

The term, fog computing, was originated by Cisco. It is used to indicate the edge of an enterprise’s network. Fog computing has also been labeled as Fogging or Edge Computing. The concept is intended to describe the computing nodes available between a host device and the cloud. Therefore, it is considered to be a decentralized

Read More

Phenology

Phenology is the study of occurrences as in recording items associated with natural events and dates of recurrent events. These recording reflect their relationship to the climatic seasonal changes as well as environmental factors such as: Temperature, pH of the water/soil, and amount of sun. Basically, phenology uses a combination of ecology and meteorology. Britannica.com

Read More

Soil Line

The soil line, in reference to remote sensing analyses, is a plot line of digital number values that typically fall 45° along this line. These values represent red light wavelengths against very-near infrared light (NIR) wavelengths. Generally, soil values fall close to the plot line and vegetation fall away from it. Thus, the vegetation plotting

Read More

SAVI (Soil Adjusted Vegetation Index)

Soil Adjusted Vegetation Index is sort of a hybrid between ratio-based indices and perpendicular indices. This index recognizes that the isovegetation lines do not run along side one another nor do they necessarily converge to a single point. It is a way to correct for the impact of soil line disparities on two-band vegetation indices

Read More