UAV Navigation’s GNSS Denied Navigation Capability Ensures Top Performance for Alpha’s Helicopter Drones – sUAS News

UAV navigation ensures that the Alpha A-900 and A-800 platforms can carry out missions even with GNSS signal denials or in the event of a jamming attack.

The majority of unmanned aerial systems (UAS) rely on global navigation satellite systems (GNSS) to maintain a stable position and/or to navigate between waypoints. In addition to this weakness, any small drone system that relies exclusively on microelectromechanical systems (MEMS) sensors to estimate aircraft attitude and that does not merge data from other types of sensors may be vulnerable to attack. GNSS jamming. The design philosophy of UAV Navigation is that the UAV cannot depend on the availability of a GNSS signal; the system must be able to continue the mission even in an environment without GNSS.

When a flight control system is jammed or operating in a GNSS-prohibited area, the UAS no longer has access to position information. With inferior systems the only alternative is for the remote pilot to take manual control making mission failure likely and depending on the distance from the ground control station (GCS) the drone may to be lost. As mentioned above, some systems may not even be able to keep the drone stable and the plane will fall out of the sky.

This is a major weakness of many commercially available drone systems, and is what has made jammers and other anti-UAV measures so popular in the industry.

Alpha Unmanned Systems selected UAV Navigation as its flight control systems provider due to its requirement to include robust GNSS denial capability in its Alpha-800 and Alpha-900 UAV helicopter systems.

Using UAV Navigation’s VECTOR-600 autopilot, Alpha’s platforms are able to continue a mission if the GNSS signal becomes unavailable or jammed; the autopilot is able to estimate the position of the UAV and follow a flight plan, or else receive a command to fly to a designated area – including the landing site, even if the UAV is at the beyond line of sight (BLOS). Of course, the autopilot sensor suite uses MEMS
technology, so the system will accumulate navigation errors of up to 30 meters per minute; wind conditions can alter this figure, but the key point is that stability and control of the rig is maintained and the aircraft can be recovered.

Alvaro Esccarpenter, COO of Alpha Unmanned Systems, says: “With UAV’s advanced dead reckoning capability, we can disable GNSS for a limited time, or we can escape from a blocked area, in order to correct our position and try to recover the GNSS signal; if the worst comes to the worst, then we know we can save the drone. This is an advanced feature only available for
professional or military grade drones. If the GNSS signal is lost or jammed, commercial drone systems will begin a controlled descent to the ground, resulting in mission failure and potential loss of the aircraft.

The military-grade UAV Navigation autopilot can continue the mission even if it is under MIJI (Meaconing, Intrusion, Jamming and Interference) attacks. Using advanced algorithms to manage data from multiple sensors allows unmanned aircraft to perform dead reckoning.

UAV navigation – Grupo Oesia

UAV Navigation is a 100% Spanish, private and independent capital specialized in the design of guidance, navigation and control (GNC) solutions for unmanned aerial vehicles (UAV) since 2004.

Flight control solutions are characterized by their reliability and robustness, being used on all types of
platforms and weather conditions. These include high performance tactical unmanned aircraft, stationary VTOL
wings, aerial targets, mini-UAVs and helicopters.

UAV Navigation is part of the Oesia Group, a Spanish group of multinational companies with more than 45
years of experience in the design, development and maintenance of advanced technologies for security,
Defense and aerospace sectors with a long history of working in avionics for large projects. The Oesia
The Group has been involved throughout the life cycle (design, development, qualification and maintenance) of critical and non-critical flight systems for the Eurofighter EF-2000, A-400M, F-18, C-295, P3 -B Orion or MH-60R. The group is now involved in the largest drone projects such as SCAF/NGWS, Eurodrone or SIRTAP.

Oesia Group relies on more than 3,500 employees and more than 15 headquarters in Spain and America
and working on projects in 23 different countries with the primary goal of creating a better, more
efficient, safe and sustainable. The company also relies on a global network of distributors to distribute
these world-leading capabilities.

Alpha Unmanned Systems

Alpha Unmanned Systems is a leading manufacturer of engineering UAV systems focused on providing
customers with reliable and versatile tactical solutions that include UAV and complementary helicopters
Drone systems and services.

Our systems are built to order and are distributed to businesses and government agencies in over 8 countries.
They perform a range of tasks, from surveillance, border control, maritime security, search and rescue,
For educational purposes, delivery of urgently needed medical supplies, among others.

The Alpha team includes aeronautical engineers, electronics engineers, mechanical engineers, drone pilots,
and professionals with a single objective: to make your mission possible.

ALPHA is above all an aeronautical engineering company. Our team works every day not only to design
and the construction of first-class helicopters and UAV systems, but also the research and development of new ways of
make them better, more useful, more reliable and easier to use. Discover the latest news from our research,
testing and validation methods and results at

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