The L-band digital aeronautical communications system (LDACS) is a key enabler of the new air traffic services and operational concepts necessary for modernization management (ATM). After its initial design, compatibility tests with legacy systems, functional demonstrations in laboratory, currently undergoing standardization process International Civil Aviation Organization (ICAO). However, LDACS has not been demonstrated flight yet. In this article, we present first in-flight demonstration...

The current VHF communications infrastructure for air traffic management is struggling to keep up with growing volume. To address this issue, a new digital aeronautical data link called L-band Digital Aeronautical Communications system (LDACS) has been introduced. be considered implementation the maturity of LDACS advanced. achieve required technology readiness level TRL6, SESAR project PJ33 developed technological validation platform conduct flight trials and verify in realistic setting....

The ground-based augmentation system (GBAS) is the cornerstone for enabling automated landings without instrument landing (ILS). Currently, GBAS evolving to approach service type-D (GAST-D) category III landings. This development toward GAST-D extends via use of multiple frequencies (L1/L2 and L5) global navigation satellite constellations. requires correction data be broadcast aircraft, which currently handled VHF (VDB) datalink. However, VDB has several known shortcomings: 1) low...

The drone market is anticipated to make up of 10% the European Union aviation in next ten years. Typical fields operation are logistics/transportation, agriculture or surveillance tasks. Both Unmanned Aircraft (UAs) and traditional manned aircraft sharing same airspace. Therefore concepts for integration UAs into controlled uncontrolled airspace mandatory. An essential part this communication between all participants. Hence development reliable data links as well channel models different...

The operation of unmanned aircraft is unthinkable without reliable wireless communication links: Despite a comparatively high expected level autonomy aircraft, monitoring and remote controlling are required to some degree. As the design every link requires good knowledge on characteristics channel, we have performed measurement campaign collect channel sounding data for air-ground at C-band. While focused description analysis dominant signal component in previous publications, now...

The growth of the market for unmanned aircraft (UA) is not expected to stop during next years. absence a crew aboard UAs requires both certain level autonomy vehicle and reliable communication channel between remote pilot aircraft. In our recent work, we proposed C-Band Digital Aeronautical Communications System (CDACS) as data link this purpose. This paper describes requirements command control in terms throughput among other criteria proposes simple cell design based on these values....

This paper extends on the initial findings of "APPLICATION OF ARTIFICIAL INTELLIGENCE IN THE NATIONAL AIRSPACE SYSTEM - A PRIMER" (Stroup & Niewoehner: Herndon, VA; ICNS-2019), and looks at why current technologies, enterprise architecture, future program plans may not be enough to address persistent operational challenges. further explores emergent concepts, business models, demand profiles necessitate Artificial Intelligence (AI)-enhanced Communications, Navigation Communications (CNS)...

Currently, aeronautical communications is undergoing a modernization process from analog to digital technology. The L-band Digital Aeronautical Communications System (LDACS) the upcoming data link for air-ground and being standardized within ICAO as well EUROCAE at moment. A wireless communication system can be interrupted by intended or unintended jamming signals. Therefore, robustness of systems crucial. In this paper, we investigate use beamforming in LDACS improve its performance...

Today's voice-based air-ground communication system for aircraft guidance is suffering from increasing saturation of the VHF band in high density areas. Therefore European Union strives a transition analog voice to more spectrum efficient digital communication. This shall be realized, among others, through development and implementation L-band Digital Aeronautical Communications System (LDACS). In order verify suitability LDACS both communications navigation, flight trial campaign will...

Operating remotely piloted aircraft is not imaginable without a continuous data exchange between the air vehicle and remote pilot. This requires reliable links. One approach for such link discussed in community terrestrial system deployed C-band. A good knowledge of physical conditions communication channel, this case air-ground/ground-air indispensable development wireless Therefore we carried out 50 MHz bandwidth channel sounding campaign with transmitter an airborne receiver. In paper...

Proposed concepts allow a data rate of ~2.8 Mbit/s per channel including protocol overhead, excluding forward error correction, assuming 3.2 bit/symbol on average This fulfills the predicted throughput requirements The synchronization symbol can be used to indicate position RACH slot A dynamic header concept reduce overhead frame under certain circumstances Here: (1 + 5) × 1.45MHz = 8.7MHz for 48UA An alternative setup is presented in paper, even more alternatives will investigated,...

Unmanned Aircraft (UA) are expected to play a more and important role in global aviation during the next years. Besides "smart" onboard control equipment leading certain amount of autonomy vehicle, reliable data link ("Command Control", C2-link) is key enabler UA civil airspace. This C2 used exchange information between remote pilot, for example positioning information, telemetry or flight trajectories, respectively. None currently available aeronautical communication standards can fulfil...

Unmanned Aircraft (UA) are expected to considerably grow in importance for global aviation during the next years. Although a comparatively high level of autonomy is anticipated UA, reliable data link ("Command and Control", C2-link) will be mandatory their operation. The C2 used exchange all information between UA remote pilot, immediately required operating UA. This called non-payload data; examples positioning information, telemetry or flight trajectories, respectively. None currently...

European air traffic system will experience capacity barriers in the future Increasing New players like UAVs Current aeronautical communication technologies already approach their limits EU project SESAR identified need for new systems to support sustainable growth of transportation Complement under development Satellite based AeroMACS airport communications LDACS terrestrial communications.

In the Roman Empire mystery cults were an integral partwithin extensive range of options giving meaning, orientation andguidance. Th e communities stood out due to specifi c qualities and aresaid diff er comprehensively from several centuries-old conventionsand attitudes.My PhD project, whose structure is shown concisely, wants contributeto a more balanced historical consideration θίασοι. Besides (fi rst) initiation practice typological investigation centres on thecircles’ togetherness....

In the last years, digitization of wireless communication has reached field aviation. New manned aircraft require advanced services to operate efficiently, while unmanned depend on at all. The absence a crew board makes reliable data between remote pilot and air vehicle requirement for safe operation. One critical part digital aeronautical systems is initial login new users. many systems, this realized by random access channel, that use establish with network. Since failing log in would make...

Digitization of wireless communications has reached aviation, requiring reliable high-throughput data links. However, communication systems can be attacked with jamming, threatening digital aviation. Fortunately, jamming attacks are, in practice, limited by the radio hardware and energy available to attacker. It is therefore important for an attacker use its budget efficiently perform a practical attack.In this paper we discuss efficiency, impact, mitigation on modern OFDM-based aeronautical...

Unmanned aviation (UA), including both small drones in urban airspace, as well larger unmanned airplanes, is one of the most popular topics these days. One key enablers for a secure and robust communication link between air vehicle instance controlling and/or monitoring vehicle, e.g. remote pilot. Naturally, parts this are wireless; here, we assume terrestrial vehicle's radio ground stations vehicle-to-vehicle drones.All wireless subject to certain channel effects, e. g. multipath...