To identify stressed vegetation in the most cost-effective way possible, high-resolution satellite data can be purchased in areas covering the fi elds in question. Five-meter resolution RapidEye imagery is ideal to investigate identifi ed areas of crop stress before deploying expensive and labor-intensive specialists directly to site. The diagram below illustrates the major steps required to perform an analysis of agricultural fi elds for the purpose of assessing chlorophyll and leaf area (vegetation density) measurements to identify stressed vegetation.
Our assessment identified three agricultural fields that displayed symptoms of vegetation stress due to low relative VI values. These three fields were analyzed using CATALYST Professional software to identify whether the low VI values were, in fact, a cause of stress or a result of a different problem (I.e. sparse vegetation cover).
The RapidEye constellation consists of fi ve satellites with an orthorectifi ed resolution resampled to fi ve meters. The constellation collects up to 6 million square kilometers a day, making it possible to cover large areas in a short time. Most importantly, the Rapideye sensors contain a unique spectral red-edge band, which is sensitive to detecting and measuring chlorophyll in fl ora.
CATALYST is a PCI Geomatics brand, which has been introduced to put our leading edge technology into the hands of decision makers. We’re a startup – with hundreds of algorithms, scalable solutions, and decades of experience.