How can drone protection be prepared before it is visible?

For some sites, the useful first step is a prepared foundation interface rather than a visible structure.

Physical drone protection is usually imagined as something visible: a frame around the asset and a net above or beside it. That may be the final form, but it is not always the best first step.

Many sites do not want a visible protection structure in place every day, because the area is used for maintenance, vehicle movement, storage, deliveries or emergency access. The earlier question is then what can be prepared without changing normal operation too much.

Start with the protection line

Before anything is installed, the protection line has to work on the actual site, not only on a plan. It has to protect the asset while leaving room for access, inspection and normal operation, and it has to take account of gates, roads, foundations, cable routes, drainage, snow clearing and equipment that may need to be removed or replaced later.

Drone protection should therefore not start with the net alone. The netting needs a position, the frame needs a geometry and the foundations need locations. If the protection line is wrong, the rest of the system is already compromised. A site review is often the first useful step: a practical check, short of a full design, of what needs protection, where a structure could realistically stand and what should not be blocked.

The first visible structure does not have to be the first work

For suitable sites, the foundation points can be prepared before the frame and netting are installed. Screw pile foundations suit this because they do not require large excavation or cast-in-place concrete. Where the ground conditions, buried services and connection details allow it, the piles can be installed in advance and left ready for later connection. They can be capped at ground level or, in some cases, kept low-profile or hidden just below the finished surface, depending on the site, surface material and connection design.

A critical infrastructure site may not want a visible structure until the threat level, operating situation or customer decision requires it, but starting all the work at that point may be too slow. Advance foundation preparation can reduce that gap.

Above ground can follow the project model

Above ground, the frame and drone netting may be installed soon after the foundations, or engineered and manufactured, then delivered or stored according to the agreed project model. Storage is arranged project by project where needed, after checking the case.

This sequence is best agreed before the site is under pressure. If the foundation interface is known, the frame can be designed around it, and the netting requirements can then be reviewed with the frame geometry and the distance to the asset. If the above-ground system is needed later, some of the slower questions have already been answered.

Advance preparation has to fit the site

Ground conditions, buried services, operating restrictions, security rules, maintenance access, the type of asset and the UAV threat being considered all decide whether advance preparation is useful.

On some sites, a permanent visible structure may be the right answer. On others, a staged approach may be better: review the site, agree the protection line, prepare the foundation points and keep the visible structure for a later deployment phase. The aim is to avoid leaving every practical decision until the system is needed, rather than to hide protection for its own sake.

What HelixHold helps prepare

HelixHold connects the visible and the hidden parts of the system. The drone netting is the visible protection layer. The steel frame holds it in the required position. The screw pile foundations anchor the structure and, where suitable, can be prepared before the frame and netting are installed.

The netting depends on the span, tension and distance to the protected asset, the frame on its support points and the foundations on where the whole system can work. HelixHold brings these decisions into the same discussion early.

Preparing drone protection before it is visible does not make the site protected, but it makes the next physical step easier and faster when the visible system is required.

SourcesICC-ES AC358 (24), April 2025, sections 1.2 and 1.4.2