HARRIER Visual Warning System for transmission line abstruction lighting activationIn response to the Dark Sky initiative to reduce light pollution and customer demand, DeTect developed the HARRIER Aircraft Detection Lighting Systems (ADLS) for automatic obstruction lighting activation for aviation obstructions such as wind farm turbines, high voltage transmission lines and communication towers.

The HARRIER ADLS provides reliable, continuous 360 degree radar surveillance of the airspace around wind farms, communications towers, power lines and installations that require aircraft obstruction lighting from the ground level to above aircraft flight altitudes, automatically issuing signals to activate obstruction lighting when aircraft are detected at a defined outer perimeter. HARRIER is the most capable technology available and meets or exceeds all regulatory requirements including the recently issued US Federal Aviation Administration (FAA) Advisory Circular and Canadian NAVCAN requirements and well as various EU standards. The HARRIER ADLS visual warning system additionally is compatible with all wind energy turbines, control and communication networks, and obstruction lighting systems.

The HARRIER ADLS collision avoidance system is based on DeTect's proven HARRIER ASR used for non-cooperative aircraft detection and UAV sense-and-avoid and the system provides aircraft detection out to 24+ miles with continuous tracking and lighting signal activation (through SCADA or direct interfaces). The HARRIER ADLS is highly customizable for each site and application with multiple alert zones and activation perimeters, and is available as a stand-alone system or integrated with other sensors and warning devices such as audible beacons. The design incorporates redundant sensors and back-up detectors that include Traffic Advisory System (TAS) and Automatic Dependent Surveillance-Broadcast( ADS-B) receivers for a greater safety and reliability margin. The typical national standard (FAA, Transport Canada) minimum range is 3- 4 miles and HARRIER exceeds the expected minimum by a safety factor of more than 400%. Additionally, HARRIER's speed measurement and heading monitoring exceeds agency requirements for range for detection and activation. The HARRIER ADLS also provides continuous recording of operational data (aircraft detections and flight tracks, lighting activation events, and system information) to internal SQL Datasystem with customizable auto-reporting feature for recordkeeping and compliance documentation. With DeTect's MERLIN processor add-on, a HARRIER ADLS can additionally provide ADLS, bird radar and drone surveillance functionality from a common sensor platform.

HARRIER ADLS advantages include:

The HARRIER Aircraft Detection Lighting System is the most widely deployed and proven ADLS system on the market with systems installed and operating in the US, Canada and Europe.



HARRIER ADLS consolidated secure web display from five radars on the PSEG Susquehanna project showing the light control zones and surrounding areas. The system provides 24-7 monitoring of aircraft activity within ten miles of the power line project.


NEXTera Perrin Ranch Windfarm HARRIER Aircraft Detection Lighting System, Arizona USA - Operating since 2013, Perrin Ranch is the first US wind farm to install ADLS to provide continuous airspace intrusion monitoring , automatically notifying the wind farm control system when aircraft are detected approaching, activating obstruction lights, with the light deactivating when the aircraft leaves the area.

PSEG HARRIER Aircraft Detection Lighting System Susquehanna Power Line Project, Delaware Gap, USA - HARRIER ADLS installed on a high voltage transmission line project through the Delaware Gap in the northeastern US. The system consists of five solid-state radars installed on the transmission towers that monitor the airspace 10+ miles around the project line.