TERRASCRY

Understand the ground
before the field day ends

TERRASCRY is an integrated hardware and software platform that turns multi-sensor geophysical data into a continuously updating subsurface model — live, in the browser, as the survey happens.

Import datasets from past campaigns and they fuse into the same model. Every source, every instrument, every season — one unified picture that sharpens with every measurement.

Live field streaming · Legacy data fusion · Multi-sensor interpretation · Browser-native

Why it matters

Field decisions are usually made across fragmented evidence

Instruments generate incompatible formats. Interpretation requires expensive proprietary software. Results take weeks. TERRASCRY replaces that workflow with a single, continuously updating environment.

During the survey

See what you have before you leave

The subsurface model updates as data streams in. Decide where to continue, tighten line spacing, or stop — while you are still standing in the field.

Across campaigns

Every dataset joins the same model

Import GPR, resistivity, or magnetometry from prior seasons. It aligns to the same grid and constrains the model further. Nothing is stranded in old software.

Across teams

A shared basis for review

Operators, PIs, and administrators see the same workspace. No more forwarding screenshots of Surfer plots. The interpretation environment is the deliverable.

Deployment Scenarios

Designed for the institutions that do the fieldwork

University Field Schools

A shared teaching environment where students collect data and the instructor reviews the model remotely. Surveys persist across field days for post-session analysis, comparison, and thesis work.

Research & Grant Programs

A coherent multi-year workflow for proposals that combine multiple data sources. Import historical surveys, overlay new acquisitions, and produce GIS-standard outputs for publication and reporting.

Recovery & Forensic Surveys

Rapid multi-sensor deployment at crash sites, burial grounds, and conflict zones. Fuse magnetic and resistivity data into a probability model with per-voxel confidence, supporting excavation planning on site.

Software Platform

A modern interpretation environment, entirely in the browser

The complete interpretation stack runs in any modern browser. Multiple operators share the same live workspace over any connection, from the field to the lab.

Unified workspace

  • Streaming 2D heatmaps and 3D terrain in split view
  • Volumetric rendering with interactive clip planes
  • Cross-section profiles and contour overlays
  • Survey playback with time scrubber
  • Command palette for rapid navigation

Layered interpretation

  • Anomaly clustering and confidence scoring
  • Multi-property posterior display (χ, σ, ρ)
  • A/B dataset comparison with difference overlay
  • Signature matching against known targets
  • Layer manager with opacity and reorder

Review-ready outputs

  • Annotations with text notes and GeoJSON markup
  • Batch export in multiple formats
  • PDF interpretation reports
  • Dataset browser and mission organizer
  • Session recovery on browser crash

System Architecture

From sensor to screen in one continuous loop

Sensor telemetry streams through edge compute directly to the browser. Every stage fires as new data arrives.

System pipeline: Instrument to Browser Instrument MQTT Jetson Edge FastAPI Browser

End-to-end acquisition pipeline

Instrument

  • 10 Hz TDM acquisition
  • Multi-sensor sync
  • SD card backup

MQTT

  • WiFi telemetry
  • QoS-tiered delivery
  • JSON payloads

Jetson Edge

  • IMU tilt correction
  • Anomaly detection
  • LiDAR DEM
  • Starlink relay

FastAPI

  • Bayesian voxel fusion
  • Euler deconvolution
  • ONNX U-Net
  • SimPEG inversion

Browser

  • 2-10 s updates
  • deck.gl + R3F
  • Split-view
  • Audio HUD

Instrument Layer

Two instruments, one shared positioning system

Built from off-the-shelf sensor modules with a shared positioning pod (ZED-F9P RTK GPS, BNO055 IMU, BMP390 barometer) connected via PCA9615 differential I²C. Open data formats from the first measurement.

Pathfinder

Alpha hardware

Rapid surface reconnaissance

Pathfinder sensor stack 8x FG-3+ Fluxgate EMI (AD9833 DDS) ZED-F9P RTK GPS BNO055 IMU + IR + LiDAR ESP32 MCU MQTT / WiFi + SD
Magnetics8× FG-3+ fluxgate, 4 gradiometer pairs
EMIAD9833 DDS + AD630 phase detector
PositioningRTK GPS (0.01 m target), IMU, RPLiDAR C1
AuxiliaryMLX90614 IR, ESP32-CAM georeferenced camera
TDM cycle100 ms (50 ms mag / 30 ms EMI / 20 ms publish)
Data rate10 Hz, 28-column CSV + MQTT JSON
Mass< 1.5 kg (target)
BOM$1,052 – $1,262 (target)

HIRT

Design phase

Targeted subsurface imaging

HIRT sensor stack MIT-3D (2-50 kHz) ERT-Lite (4-electrode) Shared Sensor Pod Probe Controller Crosshole array (0.5-3 m)
MIT-3DMagneto-inductive tomography, TX/RX at 2–50 kHz
ERT-LiteRing electrodes, 0.5–2 mA, four-electrode
GeometryCrosshole probes, 0.5–3 m separation
ProbesModular fiberglass with integrated sensors
PositioningShared pod (RTK GPS, BNO055 inclinometer)
InversionSimPEG joint (MIT + ERT + Pathfinder)
ApplicationsBomb craters, burials, marsh/swamp sites

Technical Depth

Processing stack and interoperability

Processing pipeline

  1. 01

    Import & Alignment

    CSV GeoTIFF LiDAR GPR EM/FDEM
  2. 02

    Adaptive Gridding

    IDW terrain-aware mesh adaptive trigger
  3. 03

    Attribute Computation

    analytic signal tilt derivative total gradient
  4. 04

    Inversion & Forward Model

    Euler deconvolution dipole forward splat SimPEG
  5. 05

    Fusion & Denoising

    Bayesian voxel fusion ONNX U-Net multi-property posterior
  6. 06

    Interpretation Outputs

    anomaly clusters depth estimates PDF reports ESRI ASCII

Import

CSV / JSONTabular survey points with metadata
GeoTIFFDEM raster, CRS-aware reprojection
LiDARPoint cloud to DEM pipeline
GPRGround-penetrating radar profiles
EM / FDEMMulti-channel with instrument presets

Export

CSVSurvey points, all modalities
ESRI ASCII.asc gridded output
ADS bundleArchaeological data standard
PDF reportTemplated interpretation report
GeoJSONAnnotations and geometries

Posterior Properties

χMagnetic susceptibilitySI
σElectrical conductivityS/m
ρElectrical resistivityΩ·m

Status

TERRASCRY is in active development. Pathfinder hardware is in prototype integration. HIRT is in the design phase. The software platform is functional and under continuous iteration. Field validation is ongoing with university research partners.

Collaboration inquiries from universities, research groups, and survey partners are welcome.

hello@terrascry.com