Khet Mapper — satellite eyes on the field
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Watching Khulna's rice fields and shrimp ponds from orbit.

Free satellite imagery, read into growth-stage tracking for rice paddies and extent-and-change mapping for aquaculture ponds across Khulna district.

Built on the cloud-masking method proven in snow-cover research in the Czech mountains, applied here to monsoon cloud cover over the Bengal delta. No paid imagery, no license fee.

Start a conversation See the method

Rice growth monitoring

NDVI time-series over Boro and Aman season rice, tracking growth stages and flagging stress early, even through monsoon cloud cover.

  • Season-by-season growth curves
  • Early stress and anomaly flags
  • Field-level or union-level reporting

Aquaculture and pond mapping

Shrimp (bagda) pond extent, mapped and tracked year over year across the Paikgacha, Koyra and Dacope belt.

  • Pond area estimates, in square kilometres
  • Expansion and contraction change maps
  • Dry-season composite accuracy checks

How it's built

This isn't a repackaged dataset. The cloud-masking and multi-date compositing approach is the same technique used for snow-cover retrieval from MODIS Terra and Aqua imagery in Czech mountain catchments, cross-applied to Sentinel-2 over monsoon-affected Khulna.

Satellite imagery
Sentinel-2, 10 metre resolution, from Earth Engine's public catalog.
Cloud-masked time series
Multi-date compositing to see through monsoon cloud gaps.
Field-ready report
NDVI curves, pond-area numbers and change maps, readable without a GIS background.
NDVI time-series chart — Khulna rice belt, from the Earth Engine demo
Pond extent and change map — Khulna aquaculture belt, from the Earth Engine demo

Why this exists

I grew up in Khulna. I'm now doing a master's thesis on satellite-based snow-cover and cloud-masking methods in the Czech Republic. Khet Mapper points that same method back home, as a genuine cross-application rather than a copy of someone else's published study.

What this isn't, yet

This is a free, independent demo, not a funded product. Before building anything further, I'm looking for people who actually work with rice or aquaculture data in Khulna to tell me what it's missing.

Fifteen minutes of your feedback, not a sales pitch

If you work with rice or aquaculture data in Khulna, at an NGO, agribusiness, insurer, or as a researcher, I'd like to show you this and ask what you'd actually need from it.

archisnav@gmail.com Connect on LinkedIn
Khet Mapper, started by Nabid Sheikh. Satellite monitoring for Khulna's rice and aquaculture belts.