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If UAV's can communicate live, they become a tool for r= eal-time online operations. Satellite communication is needed for global co= verage but low bandwidth and high cost are the key challenge. The integrati= on of ASIGN technology in UAV's provides a solution for this.=20
ASIGN is an advanced global image & sensor communication system for = situational awareness. The innovation of the ASIGN solution lies in technol= ogy that allows focusing on content for relevance of the operations. Releva= nce can only be decided by the situation, by the viewers, and by the time i= nformation is received. Focusing on management of maximum relevant informat= ion instead of traditional compression offers a potential of 100 to 1000 ti= mes increase in performance. The key of the UAV ASIGN innovation lies in th= e two-step, interactive and adaptive push-pull concept. Preview photos are = send to a central server whereafter authorised users can select Regions of = Interest (ROI) for which they can request transfer of more details in highe= r quality. With this approach, data transfer requirements are reduced 200-3= 00 times over sending full-size images. Video clips are handled in a simila= r two-step approach. First, a still-image 'storyboard' preview is send. Use= rs can select video segments in the resolution quality and frame-rate neede= d. A storyboard is typically 1000 times smaller than one minute of HD video= .
A recent study of ESA showed that the costs of satellite data transfer f= ar outweighted the costs of the UAV flight operations for oil and gas pipel= ine monitoring, where high resolution photos and live optical and thermo vi= deo is required. The implementation of how photo and video transfer can hen= ce make or break the business case for UAV surveillance and monitoring.
ASIGN overview seen from the user point of view
Real-time visual situational awareness, using photo and video, where rel= evant information can be seen is essential. Knowing 'what, where and when' = something essential happens, as it happens, will help decisions that could = ultimately have a large impact e.g. on the ability to save lives, to protec= t critical infrastructure, environment or society. A live connection for ph= oto/video/sound is important for several reasons, including operational, fo= r real-time situational view, safety and control, risk reduction, remote in= spection and data quality monitoring.
Examples of experienced saving in capacity for photos and video clips<= /pre>
With focus on visual communicati= ons, ASIGN is not only the traditional optimization for better images at a = given bit-=C2=ADrate, but rather than using the traditional approaches we a= llow the users to define regions, sections or segments of photos, video, im= ages (when the transitions occur is a matter of definition), so a photo can= consist of an overview in basic quality with patches (like a face or a lic= ense plate) in higher, up to full, original, quality. With video, not every= minute or every region may be of equal importance, and paying for every by= te when transferred over satellite (or any network with limited capacity), = it does not make sense to spend as much resources for less interesting or r= elevant segments as it does for more relevant.
For UAV's operating in local radio range, video and photos are dow= nlinked via Wi-Fi to the ground controller unit. It is then relayed via sat= ellite or mobile networks to remote online destinations for viewing in real= -time. If mobile networks are available, images are sent to a server via a = GSM/3G/4G modem, and relayed back tot he field for local monitoring in real= -time. In case there is no terrestrial coverage, Satcom is used (Inmarsat A= ero Terminal, SB200).
ASIGN overview for PC based version, showing also server view and rece= ivers.
Visual data transfer can when used in a traditional manner require more = communications capacity than available when most needed, such as during dis= asters, operations at sea and from air. Mobile satellite systems at L-=C2= =AD=E2=80=90band, like BGAN, provide global coverage anytime, but have fair= ly limited bandwidth shared between many users, and potentially high use co= st. ASIGN offers solutions that are needed for reducing operational cost an= d increasing speed of transfer for visual communications over MSS networks.= Accurate geo-=C2=ADreferencing and time stamping of the sent data is inclu= ded.
General characteristics:=
Key technical features= strong>:
Basic overview of UAS and ground elements