Site Survey Report: Oslo Airport Gardermoen (OSL)

Surveyed positions for detection equipment, observations only. C-UAS test 6 to 8 October 2026, survey on 22 September 2026.

CONFIDENTIAL. This report and its attachments contain photographs and positions from the airside area of an operating airport. Distribution is limited to the named recipients and their project teams. Onward sharing requires the written consent of HiDE Industry AS.

Document

Site survey report, version 1.1 (observations only, no placement recommendation), 23 September 2026

Survey date

Tuesday 22 September 2026, 12:00 to 15:00 CEST

Location

Oslo Airport Gardermoen (OSL), airside. Meeting point Hovedporten (main gate)

Prepared by

Lars Jakob Nagelsaker, CEO, HiDE Industry AS (ljn@hideindustry.com, +47 948 40 007)

Survey participants

Lars Jakob Nagelsaker (HiDE Industry AS), Christian Emaus (Dedrone by Axon). Escort: Pål Arne Sangnæs, Avinor. Site visit arranged by Avinor's drone programme (Sander Hatleli Aasen)

Prepared for

Robin Radar Systems: Willem Tacken, Ralph Wiersema and Jasper Borghart. Copy: Christian Emaus, Dedrone by Axon

Classification

Confidential. Contains photographs from the airside area of an operating airport. Distribution limited to the named recipients and their project teams; onward sharing requires HiDE Industry AS's consent

Attachments

1) Overview map (imagery and topographic versions, JPG). 2) Photo package sorted by site (JPG, reduced size). 3) Photo index with positions and camera headings (CSV). 4) Stand-alone HTML version of this report

1 Purpose and scope

Avinor's site visit at Oslo Airport on 22 September 2026, ahead of the C-UAS test on 6 to 8 October. HiDE attended with Dedrone by Axon. Robin Radar asked for coordinates, photographs with camera heading and a description of the surroundings for each possible radar position.

13 positions: A to I visited on the ground, N1 to N4 plotted on the map afterwards. Observations only, no recommendation on placement; that is done in the partners' planning tool.

2 How the survey was conducted

Photographs taken with an iPhone 17 Pro; position, altitude, compass heading and accuracy read from the photo metadata (186 photographs, WGS84, typically 3 to 8 m). Each stop position is the mean of its good photo positions, adjusted by hand to the structure at A, B and H. N1 to N4 have no photographs at the point; they are referenced by photographs taken towards them from other stops.

Mobile coverage checked with Telia and Telenor SIM cards. Equipment information (antennas, radars) as observed or stated on site, not verified.

3 Overview

Figure 1 shows all 13 positions, the photo positions with camera headings and the route driven and walked. Orange markers are stops visited on the ground with Avinor's escort. Purple markers are positions plotted on the map after the visit and not visited; they are referenced by photographs taken from other stops. Use the layer box in the top right corner of the map to switch between aerial imagery and the topographic map, and to show or hide the stop markers, the labels, the photo positions with camera heading, and the route. Click a marker for details and a photograph; click the photograph to enlarge it.

Drag to pan, scroll or pinch to zoom. Blue ticks point in the direction the camera was facing when the photograph was taken. Grey ticks mark photographs with a stated position accuracy worse than 100 m. Imagery: Esri, Maxar, Earthstar Geographics. Topographic map: © Kartverket (CC BY 4.0).

Static overview image (print version, Figure 1)

ImageryTopographic map Stop visited on the groundPlotted after the visit, not visitedPhoto position with heading

ABCDEFGHIN1N2N3N4

4 Summary of positions

Elevation is the mean GPS altitude of the photographs at the stop (hand height). Positions N1 to N4 have no altitude because no photographs were taken at the point.

5 Position descriptions

Each position is described with HiDE's field notes, two representative photographs and a local map excerpt (about 850 m by 570 m) with the photo positions and camera headings. The complete photo set for each position is in the photo package, and Annex A lists every photograph with position and heading. Click any photograph to enlarge it.

A5.1 Technical shelter, south end

Coordinates

60.175370, 11.103384 (WGS84) (adjusted by hand to the structure)

Visited

12:17 to 12:29 CEST. 14 photographs, camera headings covering approx. 264 degrees. Video: IMG_8547 (in the photo package)

Elevation

approx. 211 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

Mast on or beside the shelter is possible. Shelter roof height approx. 2.8 m. Maximum mast height must be checked against Avinor's building restriction (BRA) map or obstacle limitation plan for this exact spot.

Power

Power.

Mobile coverage

5G coverage.

RF equipment at the site

Antennas on the shelter: 1030 MHz and 1090 MHz (SSR/ADS-B), GPS receiver.

Notes

Grass area beside the runway end. Open horizon in all directions, tree line to the west. Metal shelter with antenna mast and cameras is the only structure at the spot.

All 14 photographs from A

Map screenshots (Norgeskart app) at A: 2

B5.2 Concrete building by the taxiway

Coordinates

60.202502, 11.119626 (WGS84) (adjusted by hand to the structure)

Visited

12:41 to 12:53 CEST. 37 photographs, camera headings covering approx. 332 degrees. Video: IMG_8600 (in the photo package)

Elevation

approx. 213 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

No height limit observed on site. Maximum to be checked against Avinor's obstacle limitation plan.

Power

Power.

Mobile coverage

4G coverage, Telia and Telenor.

RF equipment at the site

Antennas: 1030 MHz and 1090 MHz, GPS receiver. Obstruction light on the roof.

Notes

Concrete building with an accessible flat roof, set into an embankment with birch trees around a smaller metal shelter. Clear view over the eastern apron and taxiways towards the terminal, tower and terminal roof (G).

All 37 photographs from B

Map screenshots (Norgeskart app) at B: 2

C5.3 Concrete bowl, west side

Coordinates

60.202886, 11.114670 (WGS84)

Visited

12:59 to 13:00 CEST. 9 photographs, camera headings covering approx. 286 degrees. Video: IMG_8624 (in the photo package)

Elevation

approx. 222 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

Not assessed in the field.

Power

Maybe. One socket at C (cabinet with fibre and 230 V) and three cabinets around the bowl; probably not enough for everyone. Teledyne FLIR is also considering a trailer at C or between C and D.

Mobile coverage

4G coverage, Telia and Telenor.

Notes

According to the site visit, equipment may be placed anywhere around the rim of the bowl. Elevated position (approx. 222 m) with a view over the apron, the tower and the terminal. Question raised for Avinor: may cameras be pointed towards the Norwegian Armed Forces area?

All 9 photographs from C

Map screenshots (Norgeskart app) at C: 1

D5.4 Concrete bowl, north rim

Coordinates

60.204037, 11.116285 (WGS84)

Visited

13:06 to 13:09 CEST. 25 photographs, camera headings covering approx. 315 degrees. Video: IMG_8625 (in the photo package)

Elevation

approx. 220 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

Not assessed in the field.

Power

As C.

Mobile coverage

4G coverage, Telia and Telenor.

Notes

Same conditions as C. Guard rail along the rim (metal). View north over the forest and east towards the eastern runway.

All 25 photographs from D

Map screenshots (Norgeskart app) at D: 1

E5.5 Hilltop north, weather radar container

Coordinates

60.206193, 11.113885 (WGS84)

Visited

13:19 to 13:22 CEST. 23 photographs, camera headings covering approx. 312 degrees

Elevation

approx. 229 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

Not higher than the container itself.

Power

Power (cabinet at the container).

Mobile coverage

Not checked.

RF equipment at the site

Weather radar in the container: 9 GHz, 100 kW, one rotation per 2.5 min, scanning in 7 sectors (as stated on site).

Notes

Highest point surveyed (approx. 229 m), gravel plateau with 360 degree view over the airport and the surrounding forest. Existing container with radome housing an X-band weather radar.

All 23 photographs from E

Map screenshots (Norgeskart app) at E: 3

F5.6 Control tower

Coordinates

60.201386, 11.103408 (WGS84)

Visited

13:32 to 13:33 CEST. 2 photographs, camera headings covering approx. 3 degrees

Elevation

approx. 208 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

Not assessed.

Power

Power.

Mobile coverage

Not checked.

RF equipment at the site

VHF, UHF, 1030 MHz, 1090 MHz, GPS receiver, and the large 9 GHz radar on top of the tower.

Notes

Avinor's air traffic control tower, about 90 m high, with the surveillance radar in the spherical structure on top. Dense RF environment.

All 2 photographs from F

Map screenshots (Norgeskart app) at F: 2

G5.7 Terminal roof

Coordinates

60.194706, 11.095347 (WGS84)

Visited

13:48 to 13:53 CEST. 29 photographs, camera headings covering approx. 322 degrees

Elevation

approx. 231 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

Equipment can be set up anywhere on the roof. The light masts seen in the foreground of the photos set the height limit for a mast.

Power

Power.

Mobile coverage

East side of the roof: 5G. West side: 4G. Applies to both Telia and Telenor.

Notes

Large flat roof approx. 20 m above the apron, roughly 231 m elevation. Ballast weights and securing are required for a tripod. Overview of both aprons, the tower by the terminal (N4) and the piers.

All 29 photographs from G

Map screenshots (Norgeskart app) at G: 3

H5.8 Technical shelter, south-west

Coordinates

60.182714, 11.077997 (WGS84) (adjusted by hand to the structure)

Visited

14:09 to 14:09 CEST. 17 photographs, camera headings covering approx. 309 degrees

Elevation

approx. 206 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

The height of the antenna mast on the shelter roof is the maximum for a mast.

Power

Power.

Mobile coverage

5G Telenor. Telia not checked.

RF equipment at the site

Antenna mast on the roof (same type as A).

Notes

Same type of shelter as A and I. Open grass area by the western runway, tree line to the west.

All 17 photographs from H

Map screenshots (Norgeskart app) at H: 2

I5.9 Technical shelter, north

Coordinates

60.216185, 11.096134 (WGS84)

Visited

14:32 to 14:33 CEST. 17 photographs, camera headings covering approx. 317 degrees

Elevation

approx. 211 m above sea level (GPS, hand height)

Type

Stop visited on the ground with Avinor escort

Mounting height

See H.

Power

Power.

Mobile coverage

4G Telenor. A point-to-point link (for example Ubiquiti) from another location is acceptable to extend the network.

RF equipment at the site

Antenna mast on the roof.

Notes

Same set-up as the other shelters. Northern end of the western runway, concrete structures nearby (see IMG_8742 to IMG_8744).

All 17 photographs from I

Map screenshots (Norgeskart app) at I: 2

N15.10 Existing mast (pending Avinor)

Coordinates

60.200590, 11.115742 (WGS84) (plotted on the map after the visit)

Photographs

None taken at the point. Seen from B in IMG_8604, IMG_8603

Type

Plotted on the map after the visit, not visited

Mounting height

10 m or more, in the mast.

Power

No power. Has to be brought.

Mobile coverage

Not checked.

Notes

Pending Avinor: whether a lift can be borrowed to mount equipment up in the mast. See the photos taken from B directly towards this point.

N25.11 Gravel area east of the bowl

Coordinates

60.204195, 11.118536 (WGS84) (plotted on the map after the visit)

Photographs

None taken at the point. Seen from D and B in IMG_8640, IMG_8597

Type

Plotted on the map after the visit, not visited

Mounting height

Not assessed.

Power

No power. Generator only.

Mobile coverage

Not checked.

Notes

Gravel area east of the bowl, noted during the visit as an alternative surface to C and D. No power.

N35.12 Pier east (must be requested from Avinor)

Coordinates

60.193017, 11.109344 (WGS84) (plotted on the map after the visit)

Photographs

None taken at the point. Seen from G in IMG_8686

Type

Plotted on the map after the visit, not visited

Mounting height

Not assessed.

Power

Unknown.

Mobile coverage

Not checked.

Notes

Position requested by HiDE; permission from Avinor is uncertain. Line of sight to A appears blocked.

N45.13 Tower by the terminal (must be requested from Avinor)

Coordinates

60.192955, 11.097891 (WGS84) (plotted on the map after the visit)

Photographs

None taken at the point. Seen from G in IMG_8687, IMG_8709

Type

Plotted on the map after the visit, not visited

Mounting height

Not assessed.

Power

Probably, not confirmed.

Mobile coverage

Not checked.

Notes

Tower with a glazed cab next to the western pier, seen from the terminal roof (G). Highest vantage point over both aprons and the terminal area. Permission must be requested from Avinor.

6 RF environment observed

The following transmitters and receivers were observed or stated on site. HiDE has not measured anything; the list is provided as input for the partners' own frequency and siting assessment.

• SSR/ADS-B and GNSS: 1030 MHz and 1090 MHz antennas (secondary surveillance radar interrogation and transponder/ADS-B replies) plus GPS receivers on the technical shelters at A and B, and on the control tower F. The shelters at H and I carry similar antenna masts.
• X-band radars: A weather radar in the container at E, stated on site as 9 GHz, 100 kW peak, one rotation per 2.5 minutes, scanning in 7 elevation sectors. A large 9 GHz radar sits on top of the control tower F. Both are in the same band as X-band drone detection radars and are within a few hundred metres of positions C, D, E and N2.
• Aeronautical voice: VHF and UHF antennas on the control tower F.
• Metal and fencing near the positions: Metal guard rails along the rim of the concrete bowl (D), metal shelters with antenna masts at A, B, H and I, light masts on the terminal roof (G), and the container and mast at E. The open grass areas around A, H and I have no fences in the immediate vicinity.

7 Open items and requests to Avinor

The following points are not yet resolved. HiDE will raise them with Avinor's drone programme (Sander Hatleli Aasen, Christian Molberg Hultgreen).

• N4, tower by the terminal: permission to place equipment at or on the tower next to the western pier.
• N3, pier east: permission to place equipment at the eastern end of the pier.
• N1, existing mast: whether a lift can be borrowed to mount equipment in the mast, and whether power is available there or must be brought.
• Mast heights: the maximum permitted mast height at each position must be checked against Avinor's building restriction (BRA) map or obstacle limitation plan, in particular at A, B, H and I.
• Power at the concrete bowl (C and D): one socket at C and three power cabinets around the bowl. Allocation between vendors needs to be agreed, since FLIR/Teledyne is also considering a trailer at C or between C and D.
• Camera pointing: whether cameras may be pointed towards the Norwegian Armed Forces area at Gardermoen.
• Vehicle rigs and mobile equipment: Avinor requires a separate application for access with vehicle rigs or other mobile C-UAS equipment during the test (per Avinor's invitation). Generator use at N2 should be included in that application.

8 Follow-up

• Position selection: done by the partners in their own planning tool, using the coordinates, photographs, camera headings and site conditions in this report. HiDE makes no recommendation on placement.
• Meeting: Willem asked for a meeting after the survey. HiDE will set it up and walk through this report.
• HiDE: sends the requests in section 7 to Avinor and relays the answers, then confirms the selected positions with Avinor before the equipment is shipped.
• Site conditions to plan for: roof positions (B and G) need ballast weights and securing for tripods. N1 needs a lift. N2 has no power. C has one shared socket.

9 Limitations of this report

• Positions come from a phone's GPS and have a typical accuracy of 3 to 8 m. They are adequate for planning, not for final antenna placement, which should be confirmed on site.
• Altitudes are GPS altitudes and can deviate several metres from the true terrain height.
• Positions N1 to N4 were plotted on the map by HiDE and have not been visited on foot. N3 and N4 depend entirely on Avinor's permission.
• Details about the weather radar at E and the equipment on the control tower F are as stated on site and have not been verified.
• HiDE has not assessed radar line of sight quantitatively and makes no recommendation on placement. The photographs and the camera headings in Annex A are intended to support the partners' own assessment.

Lars Jakob Nagelsaker
CEO, HiDE Industry AS
Hønefoss, 23 September 2026

Videos

Four short clips from the visit, 720p.

Annex A: Photo index

All photographs with a GPS position, grouped by stop. Heading is the camera's compass heading (true north). Accuracy is the horizontal position accuracy stated by the phone. Photographs marked with an asterisk have poor accuracy and were not used for the position calculation. File names refer to the photo package.

Photographs taken from the bus between stops

These show the runway and apron environment along the route and are not tied to a position.