How to Task Satellites for Agriculture & Crop Monitoring

Agricultural monitoring is a time-series problem: a single image of a field tells you little, but a regular cadence through the growing season reveals crop vigour, stress, irrigation problems, and yield trajectory. Planning is about consistent revisit and getting cloud-free scenes at the right phenological moments.

This guide explains how to plan in-season acquisitions: which spectral bands matter for vegetation, how to set a revisit cadence, and how cloud forecasting changes which passes are worth tasking.

Multispectral bands drive vegetation analytics

Crop health indices such as NDVI rely on the contrast between red and near-infrared reflectance, so multispectral sensors with red and NIR bands are the baseline for agriculture. Red-edge and shortwave-infrared bands add sensitivity to chlorophyll content and crop water stress for more advanced analytics.

Spatial resolution should match the field size and management unit — moderate resolution suits broad-acre cropping and regional yield models, while VHR multispectral resolves within-field variability for precision-agriculture prescriptions.

Plan revisit around the growing season

Define the AOI as the farm or region and plan a recurring cadence rather than one-off passes — weekly to fortnightly revisit captures the crop-development curve and catches stress early. Stacking multiple optical/multispectral satellites tightens effective revisit and improves the odds of a clear scene at each step.

Time key acquisitions to phenological milestones (emergence, peak vegetative growth, senescence) so the series supports yield modelling and end-of-season assessment.

Work around cloud

Cloud is the dominant constraint on optical agriculture monitoring. Before tasking, check the cloud outlook for upcoming passes and prioritise the clearest, so you do not spend a tasking slot on a scene that returns mostly cloud.

Where persistent cloud makes optical unreliable — humid tropics, monsoon seasons — SAR provides a weather-independent complement for structural crop and soil-moisture proxies, keeping the time series unbroken.

Recommended sensors

  • Multispectral (Red + NIR)NDVI and core vegetation indices for crop vigour and stress mapping.
  • Red-edge / SWIR multispectralChlorophyll content and crop-water-stress sensitivity for advanced analytics.
  • SAR (C-band)Weather-independent backup in cloudy seasons; structural and soil-moisture proxies.

Frequently asked questions

What sensor do I need for NDVI?

Any multispectral sensor with calibrated red and near-infrared bands. Resolution should match your field size — moderate for regional models, VHR for within-field precision agriculture.

How often should I task imagery in season?

A weekly-to-fortnightly cadence captures the crop-development curve and catches stress early; combine several satellites to maintain it despite cloud.

How do I avoid cloudy scenes?

Check the cloud forecast for upcoming passes before tasking and prioritise the clearest overpasses; in persistently cloudy regions, add SAR to keep the series unbroken.

Is SAR useful for agriculture?

Yes — it is weather-independent and sensitive to crop structure and soil moisture, making it a valuable complement when optical scenes are repeatedly clouded out.

Plan a feasible acquisition

Draw your Area of Interest, set the window and look-angle limits, and PassPrediction ranks every feasible pass across all operators — neutrally, in your browser, free to start.

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