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RF Apex · Prison Solution

Prison Counter-UAS Protection

Seal the Airspace Above the Facility and Cut Off Contraband Drops

Drones dropping drugs, phones, blades and other contraband into prisons have become a serious and growing threat. RF Apex builds a detection and countermeasure barrier over the secure estate: an approaching drone is detected, verified and dealt with before it can release its payload, closing the aerial delivery route for good.

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Barbed wire fence against a blue sky
10 km
Fixed-site detection range
3 s
Alert-to-response readiness
100+
Drone types identified by signature
24/7
Continuous monitoring

Executive Decision Summary

Five Key Decisions Behind a Mature Prison Project

A prison project is won on warning time and response discipline. Get these five decisions right at the same time:

  • Treat the exercise yards, accommodation blocks and the wall line as one protected volume — a drop takes seconds once the drone is overhead.
  • Buy warning time, not just detection: sensors must alert while the drone is still approaching, so staff can reach the likely drop zone.
  • Combine fixed detection with a low-collateral response — GNSS spoofing first where suitable — because the facility sits inside a community.
  • Connect every alert to the control room workflow: camera cueing, yard lockdown decision, search and evidence recovery.
  • Prove the system at night and in bad weather, when most drops are attempted — not in a daytime demonstration.

Threat and Operating Model

Separate the Event Types First, Then Set the Requirements

Requirements should distinguish a contraband drop, reconnaissance of the estate, an escape-support flight and innocent overflight from the surrounding area.

Operating ConcernWhy It MattersWhat the Buyer Should Define
Contraband delivery by droneDrugs, phones and weapons dropped into yards or onto roofs directly undermine security and order insideLikely drop zones, approach routes, required warning time, payload recovery and evidence procedure
Reconnaissance of the estateDrones photograph walls, yards, staff routines and blind spots to plan drops or escapesObservation points to protect, incident logging, pattern analysis, police reporting
Escape supportA drone can deliver tools or distract staff during an escape attemptEscalation procedure, coordination with perimeter security, night readiness
Launch sites outside the wallOperators launch from nearby streets, car parks and housing — outside the facility's controlDirection-finding needs, operator location evidence, police handover procedure
Innocent and media overflightNeighbouring homes, press and hobby flyers create alerts that are not attacksAlert classification, response thresholds, community and privacy considerations

Detection data supports the control room picture, but an alert alone does not prove a drop was attempted. Verification and evidence handling decide whether an incident stands up afterwards.

Layered Counter-UAS Architecture

Design by Function Layer, Not by Buying One Box

A prison system is a short chain with no slack: detect early, verify fast, respond within the law, and recover the evidence. Each layer needs a named owner in the control room.

LayerFunctional RequirementProcurement Evidence
1. DetectFind approaching drones with fixed RF detection covering the estate and its surroundingsFrequency coverage, target types including small FPV drones, update rate, known limitations
2. VerifyCorroborate alerts with cameras, track history and officer observation before committing staffCamera cueing workflow, day/night performance, recording format, false-alarm handling
3. CommandPresent tracks and alerts in the control room with yard and wall-sector mappingUser roles, audit logs, integration with the existing security management system, evidence export
4. DecideAct under the facility's incident procedure: observe, lock down a yard, or authorize a countermeasureAlert prioritization, decision authority, decision records, response-time targets
5. RespondApply spoofing or jamming as authorized, recover payloads, and hand operator evidence to policeLegal authority, spectrum permission, safety interlocks, human authorization, incident reporting

Important: Detection, identification and countermeasures are three separate decisions. Prisons sit inside communities, so any active response must stay within national law and spectrum rules and be proportionate to the surrounding area.

Coverage Zones and Sensor Placement

Model Coverage by Security Zone

Model coverage by security zone. Walls, roofs and neighbouring buildings shape detection and response options very differently across a compact estate.

ZoneCoverage ObjectiveTypical Design Considerations
Exercise yards and open areasEarliest possible warning of an inbound dropSight lines over roofs, camera coverage of drop zones, staff response routes
Accommodation blocks and roofsDetect drones approaching windows and roof spacesRoof-level sensor placement, building shadowing, payload recovery access
Perimeter wall and sterile zoneDetect crossings and loitering before a drop run beginsWall geometry, external roads and housing, patrol access, power and networking
Visits, reception and gate areasAwareness over the public-facing side of the facilityPublic proximity, privacy rules, alert prioritization
Control room and evidence zoneCorrelate alerts, direct the response and preserve incident recordsTime synchronization, retention policy, integration with CCTV and security systems

System Priorities

Close the Aerial Delivery Route

The prison configuration concentrates detection and response over the estate and the wall line, so a delivery drone gets no unobserved window.

01

Perimeter and Airspace Seal

Detection and countermeasures cover the whole estate and the wall line, day and night.

02

Contraband Drop Prevention

Approach warning plus fast response is tuned specifically against the drop profile — low, slow and hovering.

03

Fast, Measured Response

Alerts reach the control room in seconds, with spoofing preferred where it safely ends the flight.

04

24/7 Duty Operation

RF detection works in darkness and poor weather, when drops are most often attempted.

Project Architecture

From Site Survey to Response in Four Steps

Every prison project follows the same process, so coverage, verification and response authority are fixed before the system goes live.

1

Survey

Map the estate layout, wall line, yards, roofs and the surrounding streets and buildings.

2

Detect

Network fixed detection with spherical detection-and-jamming units (APX-DJF-7B) over the estate.

3

Verify

Confirm the drone type and track at the command layer and cue cameras onto the predicted drop zone.

4

Respond

Apply fixed jamming under orders, or guide the drone away with spoofing (APX-DSF-GNSS); patrol officers verify with the F13M.

Typical Applications

Protection Across the Secure Estate

One system architecture, applied to the areas where a drone incident costs the most.

Estate Airspace Protection

A detection and countermeasure barrier covers the entire airspace above the facility.

Wall-Line Monitoring

The wall and sterile zone are watched closely against close-in launches and wall-hugging approaches.

Yards and Visits Areas

Priority protection over the areas where people gather — and where drops are aimed.

Night Patrol Support

RF detection is unaffected by darkness, so the night shift gets the same picture as the day shift.

Information to Prepare

What to Prepare Before Requesting a Proposal

With these six items ready, RF Apex can fix the detection positions and response methods and prepare a tailored proposal.

  • Estate layout and wall height
  • Surrounding buildings and airspace
  • Existing security and CCTV systems
  • Power supply conditions
  • Incident response procedure
  • Records of past drone incidents

Technical Requirements for the RFQ

Write Operational Outcomes and Acceptance Methods into the RFQ

A useful RFQ describes operational outcomes and acceptance methods, not just a product name. Ask bidders to respond against the same requirement matrix.

Requirement GroupBuyer InputEvidence Required from the Supplier
Threat definitionDrop profiles: drone sizes, FPV types, approach heights, night operations, payload release behaviourCompliance matrix stating detectable, conditionally detectable or out of scope
CoverageEstate boundary, yards, roofs, wall sectors, required warning time before a drone is overheadCoverage map, siting assumptions, blind-spot analysis, expansion options
EnvironmentUrban RF congestion, weather exposure, rooftop installation limits, power qualityEnvironmental ratings, installation limits, maintenance requirements
PerformanceAlert latency, track continuity to the drop point, direction finding to the operator, evidence retentionTest methods, representative evidence, confidence conditions, documented limitations
IntegrationCCTV/VMS, security management system, control room displays, police reporting formatProtocol list, API documentation, data ownership, cybersecurity architecture
Lifecycle24/7 duty cycle, support response, spares, staff training, expected service lifeMaintenance plan, spares list, upgrade policy, support SLA
ComplianceNational rules on jamming and spoofing, spectrum permission, privacy obligations toward neighboursCertificates, authorization dependencies, division of responsibilities

Deployment and Integration Plan

Treat Deployment as a Security Change Project

Deployment inside a secure facility runs under escort, permits and controlled test windows — plan it as a security project, not a delivery.

1

Form a stakeholder group: security management, control room, estates, IT, legal and the local police liaison.

2

Document past incidents, likely drop zones and launch areas, protected assets and required warning time.

3

Complete RF, line-of-sight, structural, power and network surveys at candidate rooftop and wall positions.

4

Produce the coverage and integration design, defining sensor roles, blind spots, alert routing and failure behaviour.

5

Run a pilot with approved test drones in controlled windows, including night runs over the yards.

6

Tune thresholds, camera cueing, the operator interface and the incident procedure from pilot evidence.

7

Install, complete FAT/SAT, train control room staff and officers, and schedule recurring scenario exercises.

Any change to buildings, yard use or surrounding development should trigger a review of coverage and procedures.

FAT and SAT Acceptance Framework

Separate Factory Verification from On-Site Testing

Acceptance criteria should be agreed before manufacture and installation. Separate factory verification from performance testing at the real site.

Test ItemFactory Acceptance Test (FAT)Site Acceptance Test (SAT)
ConfigurationVerify models, quantities, interfaces, firmware, accessories and documentation before shipmentConfirm installed assets, coordinates, calibration, network configuration and as-built drawings
Detection workflowDemonstrate sensor output and alert handling with controlled inputs or representative targetsRun agreed drop-profile scenarios over yards and wall sectors, including night and repeat passes
Operator workflowVerify user roles, alert acknowledgement, evidence export and escalation logicMeasure control room actions, yard lockdown timing, payload recovery and incident reporting in practice
IntegrationTest documented APIs, data fields, time synchronization, health reporting and fault statesVerify end-to-end exchange with CCTV and the security management system
ReliabilityBurn-in, restart, power-loss recovery and component health checksObserve specified continuous operation, communications recovery and environmental behaviour
Training and handoverCheck manuals, maintenance tools, spares and training materialsComplete operator and maintainer training, competency checks and signed handover records

Record test geometry, target type, route, altitude, weather, RF conditions, software version and operator actions. A single daytime demonstration is not a complete acceptance test for a threat that mostly arrives at night.

Common Procurement Mistakes

Six Pitfalls to Avoid Before Placing an Order

  • Buying detection without warning time — an alert that arrives as the payload drops changes nothing.
  • Testing only in daylight, when real delivery attempts happen at night and in poor weather.
  • Ignoring the launch site: without direction finding, the operator outside the wall is never found.
  • Adding jamming before legal authority and spectrum permission are confirmed for a site surrounded by housing.
  • Keeping alerts in a separate system the control room does not monitor at night.
  • Treating one demonstration flight as proof of coverage over every yard, roof and wall sector.

Frequently Asked Questions

Questions Prison Operators Ask First

Can it stop small FPV drones?

Yes. Wideband detection covers 300 MHz–13.4 GHz, including the links used by FPV and racing-type drones commonly used for drops.

Will jamming affect communications inside the prison?

No. Jamming targets drone control and navigation bands only and is activated under orders; where collateral impact is a concern, GNSS spoofing provides a lower-impact response.

Does it work at night?

Yes. RF detection does not depend on light, and night performance is part of the site acceptance testing — because that is when most drops are attempted.

Can it find the operator, not just the drone?

Direction finding on the control link indicates where the operator is located, and the evidence package supports a police handover.

Who may authorize a countermeasure?

Only the authority named in your incident procedure. The system logs the alert, the verification and the authorizing decision for later review.

How much warning do officers get?

That depends on siting and terrain, which is why the RFQ should specify a required warning time and the SAT should measure it on real approach routes.

Official Planning References

Official Planning References

For planning context, consult the official sources below. They do not replace national corrections policy, spectrum authorization or legal review.

FAA UAS and Counter-UAS Resources

www.faa.gov/uas

U.S. Department of Homeland Security

www.dhs.gov

ICAO Unmanned Aviation Resources

www.icao.int

Get a Tailored Counter-UAS Proposal

Tell us your estate layout, wall configuration and incident procedure, and RF Apex will prepare a tailored proposal.

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