DEGREANE HORIZON came about by the transformation of the Electronics Department of Ets DEGREANE, founded in 1926, into an individual incorporated company whose single stockholder is the VINCI Group.

DEGREANE HORIZON is in 3 sectors connected to electronics :
• Defense since 1960
• Energy since 1973
• Meteorological Observation since 1984

Whatever your field of activity, DEGREANE HORIZON puts all its know-how at your disposal so as to meet YOUR own specific need.

Thanks to over 20 years of experience, DH has been a global leader in the fields of environmental measurement and engineering.

Several jobs to be found in our company :
• Everything linked to aeronautical meteorology and to acquisition networks used by meteorological services throughout the world,
• acquisition and transmission of sensitive data : conception and making of aeronaval buoys, very low frequency operational sonar emitters, underwater listening polygons, and the development and Maintenance in Operational Conditions of surveillance radar,
• transmission of warning signals which use several communication networks : telephone, radio and internet : alarm systems and the protection of telecommunication facilities against a surge in voltage.

OUR VALUES : To be professional, to be reliable, to listen
To keep our customers satisfied – to have the quality of our work acknowledged remains our greatest motivation.

The « Bureau Veritas Corporation” has deemed our quality management consistant to the NF EN ISO 9001:2000 standards

The environment, a necessity : A large range of skills ...
Major National Meteorological Services such as Meteo France have been using our products since 1985 to equip their synoptic and climatological networks (the MIRIA, AURIA and XARIA series of stations).

SIOMA Integrated Runway Meteorological Observation Systems are installed on over 400 airports. Products and services offered meet the requirements of those who are responsible for improving the environment, assuring transportation safety, and safeguarding life and property.

SIOMA : A leader in the world of airport meteorology

The main principles
FOR METEOROLOGICAL AIRPORT SAFETY

These days air safety is a major preoccupation for everybody concerned in air transport. Accordingly aeronautical meteorology is a critical component as much for the safety and well-being of passengers as for the economic planning of airport operators.

SIOMA, conceived in 1990, is characterised by having been developed in close cooperation between DEGREANE HORIZON, the Civil Aviation authorities, METEO FRANCE and the Service Users.
SIOMA is designed for all categories of airports from small VFR aerodromes right up to category III D major international airports; it is an open system, modular and upgradeable complying with the latest standards and recommendations of the WMO and ICAO.
It allows in particular for the rapid extension of sensor configurations (wind profiler, meteorological radar...) or for system architecture ( ATIS, AMSS ...) based on technological needs development or new operational needs of operators (new runways, change in airport category...).

SIOMA consists essentially of five sub-functional elements developed by DEGREANE HORIZON:
• Runway equipment : Meteorological sensors sited at runway mid point, thresholds and met garden.
• CIBUS : Duplex digital communication network which ensures a secured sensor data acquisition and transmission through hub concentration and FSK modems with maximum efficiency and reliability.
• CAOBS : A central Workstation designed for acquisition, processing, data storage and analysis, messages entry and coding production, distribution facilities for the broadcast of meteorological information and based on a fully redundant operational configuration PC-type computer (normal/stand-by) running Windows.
• AEROVIEW : Set of PC-type visualisation stations for the comprehensive display of meteorological data and messages.
• Display indicators : Set of panel mounted indicators INT300, DEOLIA92 or PC type used as back-up.

SIOMA equipment based on a field proven in-house has developed hardware and software which assure the strength of the system with unmatched performances regarding secure and reliable availability of data.

SIOMA has been a success story over the past 15 years with more than 400 systems derived from the SIOMA concept installed, mainly in major international airports in France and 72 countries around the world.

SIOMA range TR 30 : The Transmissometer TR30 is a visibility sensor designed for aeronautical purposes.
ALC 30 : This Laser-Ceilometer is a cloud height sensor mainly used at airports to provide the altitude of the cloud bases.
DF 320 : Forward scatter sensor designed for visiblity measurements.
PCL 1300 : Wind profiling radar which measures the vertical profile of the wind and the wind shear.
CAOBS : used for the acquisition, detection, processing, date storage and transmission of meteorological information and messages METAR/SPECI...