TERA IT

Service

GIS & Geospatial Solutions

Location is data. We turn it into operational and environmental intelligence.

The problem

Location data you can't analyse is just a very large map.

Imagery keeps arriving whether or not anyone can use it. Satellite passes, sensor feeds, drone surveys and field collection accumulate in separate systems and formats while analysis happens by hand, one area at a time - so by the time an answer is produced, the ground it describes has already changed.

Layer registration

The same territory held as separate, unreadable layers until they are registered onto a common frame. Registration is the unglamorous step that turns four datasets nobody can combine into one picture somebody can act on.

The mistake: collecting spatial data faster than you can use it

Satellite imagery, sensor feeds, drone surveys and field collection accumulate in separate systems and formats. Analysis happens manually, one area at a time, and by the time an answer arrives the conditions on the ground have moved on. The imagery keeps arriving regardless.

What it costs

Field surveys repeated because last year's results can't be reproduced. Decisions made on data months out of date. Expensive imagery subscriptions producing a fraction of the insight they could, because nothing turns pixels into measurements automatically.

~90%

of manual survey effort replaced by automated classification

Before

Manual survey, expiring answers

  • Separate formats
  • Manual analysis
  • Stale results
  • Not reproducible

After

Automated pipeline, current view

  • Unified platform
  • Automated classification
  • Scheduled refresh
  • Reproducible

Our approach

What we do differently

We build repeatable pipelines that turn raw imagery into measurements analysts can act on - and re-run on a schedule, so the answer stays current instead of expiring.

What good looks like

An agricultural monitoring body identified palm plantations and estimated planted area through slow manual survey. We built a classification pipeline over multispectral satellite imagery that estimates planted area per parcel automatically - replacing roughly 90% of the manual effort and re-runnable every growing season.

  1. 1Unify satellite, sensor, and field data into one spatial platform
  2. 2Build remote sensing pipelines that classify and measure automatically
  3. 3Deliver analysis through interfaces analysts use directly, without a GIS specialist in the loop
  4. 4Make every run reproducible, so change over time is measurable
  5. 5Integrate spatial output into the operational systems where decisions happen

In depth

The detail behind the summary

Expand any chapter for the full reasoning - the failure modes we see most, why they happen, and what we do about them.

Why spatial data accumulates faster than it is used

Acquiring spatial data has become straightforward and comparatively cheap. Satellite imagery is available on subscription, sensors are inexpensive, drone survey is routine, and field collection runs on a phone. Turning any of it into a measurement somebody can act on has not become correspondingly easier, and the gap widens every year.

The bottleneck is usually not analytical capability but reconciliation. Datasets arrive in different projections, at different resolutions, on different schedules, with different identifiers for the same real-world feature. Before any analysis is possible, someone has to make them agree - and because that work is tedious and unversioned, it is redone from scratch for each question.

That is why analysis tends to happen one area at a time, driven by whoever asked. It is also why results are so hard to compare across time: if the preparation was manual and undocumented, this year's figure and last year's were produced by subtly different processes, and the difference between them cannot be attributed confidently to change on the ground.

The shift that matters is from analysis-as-project to analysis-as-pipeline. The same preparation encoded once, versioned, and re-run on a schedule. The first answer costs more; every subsequent answer costs almost nothing and is directly comparable to the last one.

The reproducibility test

Can you re-run last year's analysis today and get last year's answer? If not, you cannot distinguish real change from methodology drift - which means you cannot use the data for monitoring.

From pixels to measurements

Raw imagery is not information. A multispectral scene is a large array of reflectance values, and the analytical work is converting those into classifications and measurements that correspond to things people care about - land cover, crop type, planted area, vegetation health, encroachment, change since the last pass.

Doing this by visual interpretation is accurate and does not scale. A skilled analyst can delineate parcels from imagery reliably; they cannot do it for an entire region every season, which is exactly the frequency at which the information is useful. Automated classification scales, and the engineering question is how to make it accurate enough to be trusted.

That depends on three things: imagery quality, which sets the ceiling on what is distinguishable; feature engineering, which is where domain knowledge about spectral signatures and seasonality does most of the work; and ground truth, which is the field data the model is trained and validated against. Ground truth is almost always the constraint, and it is worth investing in before the modelling rather than after.

We report accuracy honestly, including where a classifier is weak. A model that performs well on mature plantings and poorly on young ones is usable if you know that; it is dangerous if you do not. A classifier whose error characteristics have not been described cannot responsibly be used for decisions, however good its headline accuracy number looks.

Getting spatial analysis out of the GIS team

In most organisations, spatial analysis is bottlenecked on a small number of specialists. Anyone who needs a spatial answer files a request, waits, and receives a static map. This limits throughput to the specialists' capacity and, more subtly, limits which questions get asked at all - because a question that requires a two-week wait is often not worth asking.

The fix is interfaces built for the person with the question rather than for the GIS professional. A planner should be able to select an area and see the current classification, the change since last season, and the underlying confidence, without opening a desktop GIS or knowing what a projection is.

This changes the specialists' role rather than removing it. They stop producing individual maps on request and start building and maintaining the pipelines and models that serve everyone - which is both higher-leverage work and considerably more interesting than repeating the same clip-and-export.

The last step is integration into operational systems. A spatial insight that lives only in a mapping application is still a report. Pushed into the system where the decision is actually made - the asset register, the scheduling tool, the case management system - it becomes part of the workflow, and it gets used by people who will never open a map at all.

Usually no replacement needed

Most of the value comes from pipelines and analytics layered onto the GIS you already run. We integrate first and replace only where the existing platform is genuinely the constraint.

Monitoring rather than reporting

There is a categorical difference between a one-off analysis and a scheduled pipeline, and it is worth being explicit about it because it changes what the investment buys. An analysis answers a question about a moment. A pipeline answers the same question repeatedly and makes change visible.

Change is usually the thing that matters. Total planted area is useful; planted area against the same measurement last season, with the differences located, is what drives action. The same is true across domains - encroachment against a boundary, vegetation stress against a baseline, asset condition against last inspection.

Scheduling introduces engineering requirements that a one-off analysis avoids, and they should be scoped rather than discovered. Imagery availability varies with cloud cover and revisit interval. Source APIs change. Storage grows continuously. Results need versioning so a historical figure remains reproducible even after the model improves. Someone needs to be alerted when a scheduled run fails rather than finding out when a figure is missing.

This is why we hand over pipelines with monitoring and documented failure handling rather than notebooks. A notebook that produced a good answer once is a demonstration. A pipeline that has been running unattended for six months, with its failures visible and handled, is a capability.

What you actually get

Concrete deliverables, not a statement of intent. Each one is something that exists at the end of the engagement and that your team owns afterwards.

Unified spatial platform

Satellite, sensor, drone and field data brought into one platform on a common coordinate frame, with the reconciliation encoded rather than performed by hand for each question.

Remote sensing pipelines

Classification and measurement pipelines that convert imagery into the specific quantities you act on, versioned and scheduled so results stay current and remain comparable over time.

Accuracy validation and characterisation

Validation against ground truth with accuracy reported per class and per condition - including where the model is weak, so results are used within their actual reliability.

Analyst-facing interfaces

Interfaces built for the person with the question rather than for a GIS specialist, so spatial answers stop being bottlenecked on a request queue.

Operational system integration

Spatial output pushed into the systems where decisions are made - asset registers, scheduling, case management - so the insight reaches people who will never open a map.

Monitoring and failure handling

Scheduled runs with alerting, result versioning for historical reproducibility, and documented handling for the imagery gaps and API changes that will occur.

When this isn't the right engagement

  • If you need a single one-off analysis, a scheduled pipeline is overspend - we will scope the analysis and tell you what the pipeline would cost if it later becomes worth it.
  • If no ground truth exists and there is no budget to collect any, automated classification cannot be validated and we will not report an accuracy figure we cannot substantiate.
  • If your imagery resolution physically cannot distinguish the features you need, no modelling recovers that - we will say so at assessment rather than after the build.

Questions we get asked

Do we need to replace our existing GIS?
Usually not. Most of the value comes from pipelines and analytics layered onto what you already run. We integrate first and replace only where the existing platform is genuinely the constraint.
How accurate is automated classification?
It depends on imagery resolution, spectral bands, and ground truth quality. We validate against field data and report accuracy honestly, including where the model is weak - a classifier you can't characterise isn't usable for decisions.
Can this run on a schedule?
Yes - that's the main point. A one-off analysis is a report; a scheduled pipeline is a monitoring capability that shows change over time.

Want to know where you actually stand on gis & geospatial solutions?

Book an assessment

What we deliver

We design and implement geographic information systems and geospatial analytics platforms that combine satellite, remote sensing, and operational data into actionable spatial intelligence.

GIS Systems
Enterprise geographic information system design and deployment.
Remote Sensing
Satellite and aerial data processing pipelines.
Satellite Data
Ingestion and analysis of multi-source satellite imagery.
Spatial Analytics
Location-based analytics and modeling.
Mapping
Custom mapping platforms and visualization tools.
Geospatial Intelligence
Decision support built on layered spatial data.
Environmental Analysis
Environmental monitoring and impact analysis.

Outcomes

  • Faster environmental and infrastructure decision-making
  • Consolidated spatial data across previously siloed systems
  • Operational intelligence derived from satellite and sensor data