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Aerial & 3D Data

Multispectral & Agricultural Survey

Measuring light reflected by crops across several narrow bands, which makes plant stress visible before it is visible to the eye. Difference vegetation indices turn that into a map of where the crop is healthy and where it is not.

Typical accuracy · Indices are relative, not absolute. A representative ground calibration target is flown and used to make the data comparable, and stated as a limitation where none was available.

Multispectral sensor over an arable field
HOLT · CROP ANALYSIS

When you need it

  • →Crop stress is appearing and you need to find where and why.
  • →Irrigation or nutrient application needs targeting rather than blanket treatment.
  • →Field performance is uneven and the cause is not obvious from the cab.
  • →You need trial data or a baseline for comparison across a season.

What you get

  • NDVI and NDRE index maps per field
  • Multispectral orthomosaic on a common map
  • Zone map for variable rate application
  • Irrigation uniformity assessment
  • Comparison across flights through a season

How it runs

  1. 01

    Crop type, growth stage and what question you are trying to answer established first.

  2. 02

    Calibration target placed and recorded, flight planned for relevant bands.

  3. 03

    Flight and processing, indices computed and field boundaries applied.

  4. 04

    Maps issued with interpretation, not just a coloured raster.

Horizontal control
±10mm typical
Vertical control
±8mm typical
Datum
OSGB36 · EPSG:27700
Area covered
Norfolk base · 6 regions

Questions we get asked

Is this the same as satellite imagery?

Similar physics, completely different resolution. Satellite tells you a field is stressed. Airborne multispectral tells you which part of the field, at a resolution you can drive a sprayer with.

Do I need this for a small holding?

If you are trying to reduce input spend or diagnose a problem, the flight often pays for itself in one season. If your fields are uniform and unproblematic, it will not.

Where we cover

Norfolk based, working nationwide. Site-based surveying, so distance is rarely the constraint.

Available across every region we cover.

Every town, district and borough we cover is listed in full on each region page. See the full service area.

All 18 other services

Topographic & Land SurveysLevels, contours and site detail for planning, design and construction.Level Surveys & Site GradientsAccurate falls and cross-falls, including Kent's shrink-swell clay.Measured Building SurveysMeasured floor plans for architects, conveyancing and party wall work.Boundary & Site ControlBoundary definition and setting-out control to RICS standard.Expert Witness & Boundary Dispute ReportsIndependent evidence for boundary disputes and neighbour conflicts.Drainage & Flood Risk SurveysFlood zone assessment and drainage run-off measurement.Engineering Surveys & Setting-OutPrecision setting-out, control and dimensional checks on site.Construction Progress MonitoringRegular site measurement tracking progress, volumes and change.As-Built & Completion SurveysFinal measured records for handover and compliance sign-off.Drone PhotogrammetryAerial reconstruction producing accurate 3D models and imagery.Aerial Mapping & OrthomosaicsGeoreferenced, distortion-free imagery from a single flight.Point Clouds & 3D ModelsDeliverables in E57, LAZ, LAS, IFC and XYZ for your software.Volumetric & Stockpile SurveysInstant stock tonnage, cut and fill volumes from measured data.LiDAR & 3D Laser ScanningMillimetre-accurate point clouds that reach beneath vegetation.Biodiversity Net Gain SurveysBNG baseline, condition and monitoring evidence from the air and the ground.Roof Surveys & Aerial InspectionsCondition surveys of roofs and structures without scaffolding.Dropped Object InspectionRecorded and verifiable inspection regime for dropped objects.Thermal & Insulation InspectionLocate heat loss, failed insulation and water ingress before it spreads.

Start here

Send the address and what it is for.

You will get a straight answer on whether this survey is the right one, and what it should cost. If it is not, we will say so.

info@prospaplans.com · Norfolk, Kent, London, East Anglia and the Midlands

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