Our Technologies

Vultus is utilizing state-of-the-art algorithms and API’s to deliver insightful information to the growers around the globe.

Data Sources

Landsat-8 Sentinel L1C Sentinel L2A Planet (Coming soon)
Description NASA satellite , high spatial and temporal resolution with good spectral bands European union satellite, very high spatial, spectral and temporal resolution Same as sentinel L1C, but with additional calibration Commercial satellites, very high spectral, spatial and temporal resolution , a bit costlier
Resolution 30m 10m 10m 3m
Revisit rate 16 days 3-5 days 3-5 days Up to daily
Archive Since 2013 Since 2016 Since 2019 Since 2017
Cloud removal no Yes Yes Yes
Atmospheric calibration No No Yes Yes
Analysis All All All All

Plant Health Indices

NDVI

Normalized difference vegetation index NDVI is one of the most used vegetation indices in crop monitoring. NDVI is robust and straightforward to calculate, is in the following equation:

NDVI = (NIR - Red) / (NIR + Red)

Where NIR is the near-infrared part of the spectrum and Red is the red band.

MSAVI2

The purpose of using Modified Soil Adjusted Vegetation Index (MSAVI2) is to minimize the background soil effect on the vegetation index. MSAVI2 is calculated as follows:

MSAVI2 = (NIR + 1) − (1/2)[(2NIR + 1)2 − 8(NIR − Red)]½

The modular agile structure of Vultus pipeline allows also for adding more vegetation indices and specialized algorithms based on the needs of our partners and users.

Plane Health Indices

The above image shows two planet health indices visualized as heatmaps with color ranging from green (healthy plants) to red (bare soil or unhealthy plants)

RGB

Is the true color composite for the red, green, and blue spectral bands.

Our one pagers PDF for Plant Health can be found in the following link Link: PLANTHEALTH

Radar Vegetation Index

The Radar Vegetation Index (RVI) is an indictor derived from Synthetic Aperture Radar (SAR), it can be used to monitor the crop growth.

RVI

The above image should how the crop growth in the field, while the red means the crop grow badly, while yellow means intermediate, green represents the part which grows well.

Our one pagers PDF for SAR can be found in the following link Link: SAR

Zoning

Management zones are the areas within the field that demonstrate homogeneous performance (based on the VIs values). A classification algorithm is used to divide the field into a number of MZs that remain stable over time. There are five management zones with predefined thresholds. Zones range from bare soil to plant with low performance (low yield potential) to average performance and high performance and in between classes.

Zoning Zoning

The above image demonstrates Zoning algorithm output. In general, the plant health shows an increasing order from zone 1 to zone 5

Our one pagers PDF for Zoning can be found in the following link Link: ZONING

Crop Specific Nitrogen Recommendation

Crop specific Nitrogen recommendations use various Vultus algorithms and provides the prescription based on the crop types such as Soybeans, Sugarcane, Corn, Rapeseed, and Potato. We use different vultus algorithm for other crops.

Nitrogen Nitrogen

The above image demonstrates Crop Specific Nitrogen Recommendation algorithm output. An ascending trend for nitrogen recommendation should be given in line with cluster 1,2,3,5,4 with our suggestion.

Our one pagers PDF for nitrogen recommendation can be found in the following link Link: NR

Tractor Prescription

Nitrogen recommendation maps are delivered in two standard formats, ISO XML according to the industry standard and shape-file format.

Time Series

Time Series is a set of data points or observations taken at specified times usually at equal intervals (e.g hourly, daily, weekly, quarterly, yearly, etc). Time series provides a digital archive of measurements. In the case of agriculture applications, time series is used to analyze plants performance for the season. Satellite-based plants health indices like Normalized Difference Vegetation Index (NDVI) presents a reach source for time series observation. Linking NDVI with other plants performance limiting factors such as irrigation, fertilization, and local weather could help to understand the effect of these factors on plants and their relationship to the seasonal changes.

Vegetation Index Vegetation Index Vegetation Index Vegetation Index

The above images show the vegetation index of a field expressed as a heat map. Each plot outline the plant performance in different developing stage.

Cloud Removal

To ensure a high degree of quality we are applying two-steps mechanism to remove satellite images contain cloud cover. The first step is to remove any scene/tile with cloud cover larger than 20%. The information about the cloud cover percentage for this step is provided by the data providers (ESA and NASA/USGS). The second step is to apply a pixel-based classification algorithm to classify each pixel in the scene/tile into a cloud or no cloud.

NDWI (water stress)

The Normalized Difference Water Index (NDWI) is a remote sensing derived index estimating the leaf water content at canopy level.

Water stress Water stress Water stress

The above images show the water stress in the farm in different times. Yellow color means low value of the NDWI, Blue color means high value of the NDVI.

Our one pagers PDF for water stress can be found in the following link Link: WATER STRESS

Soil Organic Carbon

Patent pending Soil Organic Carbon Maps clearly show farmers the amount of SOC present in their fields, based on a 0-10 cm soil depth in measures of g/kg at a 10 m resolution. No field surveys, expensive lab tests or lengthy waits required – growers get year-round instant results. Instead of a snapshot in time, growers can measure changes in soil health over years (with up to 4 years of historical data), gaining deeper insight into fields and helping to create the best possible farming strategy.

Vultus creates SOC maps using satellite remote sensing data, patented techniques and data from thousands of in situ soil samples. Satellite images are available every 2-3 days. Our service processes images, calculates the soil spectral indices, optimizes reflectance matches, and combines our dataset using patent pending AI algorithms to continually improve our SOC maps.

Our one pagers PDF for SOC can be found in the following link Link: SOC

Process Status

The process status API will check all server status of data being processing. User can check the status for there data on real time processing. If the data finish processing, them the process status will change from False to True. The cloud tag will indicate the polygon whether covered by cloud. Without cloud covered status will be false. And the polygon have cloud in side will be True. This days data will be skipped in server and process status will update to True. That means user can not download the data, when “processstatus” and “cloud” both True.