SPH Engineering's Test Range for Geophysical Sensors
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Main Benefits

The test range for UAV-based geophysical sensors is located next to the SPH Engineering's (Latvia, EU) headquarter and has the size of 450x70 meters.


The coordinates of targets are known with cm-level precision to ensure highest accuracy for the interpretation of  data acquired by the geophysical sensors

Variety of Targets

The purpose-built testing ground for geophysical sensors has multiple targets of diverse material and size buried in variety of soils


The test range is located in 20min car/taxi ride from the Riga International Airport, which has direct flights from more than 76 cities in Europe, Asia, Africa, and America.

Increased safety

The test range is located in the special use airspace/danger area EVD1 BALOZI ensuring flight and staff safety

For Experts by Experts

Designed for manufacturers, surveying and scientific teams for testing and experiments.


The test range can be customised: plastic pipes can be filled with liquids, new targets can be buried in variety of soil types, etc.

Test Range

One of its kind!

SPH Engineering is a multiproduct drone software company and UAV integration service provider. The SPH's flight area is a dedicated air zone (special use airspace/danger area EVD1 BALOZI) and is enriched with a unique 450x70 meters test range for various type geophysical sensor testing with UAVs. 

Dozens of real application scenarios of geological sensors were taken into account to design the testing area. The multiple targets buried in natural soil (layers from sand to clay) mimic the infrastructure (pipes, barrels, etc.) usually inspected. The four kinds of weathers in Latvia give the option to test the technologies in real conditions: i.e. dry soil in summer, wet to extremely muddy - spring/autumn and frozen in winter. 

For testing in simpler condition, the area offers also two zones of homogenous sand and black soil - any target can be buried. An asphalt road is located next to the testing field - which allows to test e.g. GPR's to control the road carpet.

This seems to be the first and so far the only such test range in the world!


Who can Access?

The SPH's test range is designed for manufacturers, surveying and scientific teams for equipment testing and various experiments.

Services provided by SPH Engineering:

  1. integration of sensors with UAV,
  2. fine-tuning of UAS;
  3. professional consultations related to drone-based sensor integration;
  4. knowledge and technical support of SPH's professional team;
  5. well-equipped workshop to tune/repair drones and sensors;
  6. drone rental (incl. certified pilot) to carry your sensor;
  7. office space to charge batteries with internet access;
  8. refreshing/warm drinks with drop of the Rigas Balsam (according to the season).

The services 4-8 are provided for free if SPH Engineering:

  • will get full copy of the data acquired from the SPH's test range, including raw, processed data and data interpretation;
  • will have the right to publish the fact of test conducted;
  • will have the rights to publish samples of acquired good quality data.
  • will need to provide only a reasonable amount of SPH's team resource.

For enquiries please contact ugcs@ugcs.com

Precise Coordinates

The coordinates of all targets are known with cm-level precision. This ensures the highest accuracy of data interpretation.

The depth of the targets was measured from the top of the target to the ground surface.

The diagonal orientation of pipes allows to test the response to the target at a different depth, i.e. distance from the sensors.

All PVC pipes have bends on both sides and can be filled with any liquids if required for testing/experimenting.

Data Samples

SENSYS MagDrone R3 magnetometer

UAV-based magnetometerSENSYS MagDrone R3

Geometrics MagArrow magnetometer

UAV-based magnetometer Geometrics MagArrow

SENSYS MagDrone R4

UAV-based magnetometer SENSYS MagDrone R4

Geonicss EM61Lite

UAV-based metal detector Geonicss EM61Lite


The coordinates of the permanently installed targets are known with cm-level precision to ensure highest accuracy for the interpretation of data acquired by the geophysical sensors

List of permanently installed targets

# Target Diameter, mm Length, m Depth under surface, m
1 Stainless steel pipe 110 6.0 0.4-1.0
2 Steel pipe 4.0mm wall 500 6.0 1.0-2.0
3 PVC pipe EMPTY 110 6.0 0.4-1.0
4 Steel pipe 3.0mm wall 314 6.0 1.0-2.0
5 PVC pipe EMPTY 160 6.0 0.5-1.5
6 Steel pipe 2.5mm wall 200 6.0 0.5-1.5
7 Plastic barrel 50L vertical (empty) 400 0.57 0.5
8 Plastic barrel 50L horizontal (empty) 400 0.57 0.5
9 Steel barrel 200 L, vertical 610 0.88 1.0
10 Plastic barrel 100L vertical (empty) 420 0.70 1.0
11 Steel barrel 200 L, horizontal 610 0.88 1.0
12 Plastic barrel 100L horizontal (empty) 420 0.70 1.0
13 Reinforced concrete pipe 1000 8.0 1.0-2.0
14 PVC pipe (water filled) 110 6.0 0.4-1.0
15 Steel pipe 3.0mm wall 60 6.0 0.5-1.5
16 PVC pipe (water filled) 160 6.0 0.5-1.5
17 Steel pipe 1.5mm wall 110 6.0 0.5-1.5
18 Plastic barrel 50L vertical (water filled) 400 0.57 0.5
19 Plastic barrel 50L horizontal (water filled) 400 0.57 0.5
20 Steel barrel 200 L, diagonal 610 0.88 1.0
21 Plastic barrel 100L vertical (water filled) 420 0.70 1.0
22 Steel barrel 200 L, flattened (crashed) 610 0.88 1.0
23 Plastic barrel 100L horizontal (water filled) 420 0.70 1.0

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