Research on Battlefield Awareness System Based on Internet of Things Technology Zhao-fu Sun1, De-xiang Sun2, Zhi-liang Li2 1 Flight Training Base of Air Force Aviation University; Changchun, China 2 Training Department of Air Force Aviation University, Changchun, China (sdx58964@gmail.com, iott1230@163.com) Abstract - As a newly-developed and important technology in recent years, the Internet of Things (IOT) technology was regarded as “a gold mine of unknown reserves” by military experts, its kernel ideal of “connecting things” has a significant influence on information-based war. The concept of the Internet of Things and its military application are introduced, also the framework of battlefield awareness is analyzed, meanwhile the application system of the Internet of Things technology in battlefield awareness is proposed. Finally some related key problems are discussed. II. THE FORMATION AND DEVELOPMENT OF BATTELE AWARENESS SYSTEM The information-based war in the twenty-first century is regarded as “the success of the sense”, in the background of modern military competition, the control of “transparent battlefield” is the inevitable result of information development, and the focused point of all powerful and strong countries. A. Basic concept Keywords - Internet of Things technology (IOT), battlefield awareness, system structure, sensor I. INTRODUCTION The IOT’s fast development has brought a significant influence on the society from all sides. Its wide application has begun in physical distribution management, intelligent transportation, environment monitoring, intelligent index, remote medical treatment, intelligent housing and military defense.[1]The breakthrough in the technique is more probably first applied to military, and promotes the military innovation forward. The IOT’s creative logos has broken the traditional military thought, also will pound at the existing military operation system. Its integration into the battlefield awareness system is an effective way to improve the information-based war. The IOT’s concept is first proposed in America mobile computer and network conference in 1999, its English name is “The Internet of Things”, based on computer and internet, according to promissory protocol, it connects things with the internet using the facilities such as RFID, infrared sensor, GPS and laser scanner, to realize intelligent recognition, location, tracking, monitoring and management, which constructs a real internet covering all things in the world. [2-4] The IOT is composed of three layers. First is the sense layer, which means obtaining all kinds of information with RFID, sensor, and two-dimension bar code. Second is the network layer, which means transmitting the obtained information with the integration of telecommunication and internet. Third is application layer, which processes the information obtained from the sense layer, to realize practical application. [5-7] The concept of battlefield awareness forms with the development of information technology, especially the detection technology, and the further study of new military theories. Battlefield Awareness (BA), means the fight and support troops can grasp the real-time information of the enemy, the friend and our troop deploy, weapon allocation, and battlefield environment (such as terrain, meteorology and hydrology). Besides traditional reconnaissance, surveillance, intelligence, targeting and damage evaluation, battlefield awareness’s biggest character is the management and control of information resource. In order to improve the army’s ability of battlefield awareness, many countries are investing related systems. [8][9] B. Framework Nowadays, many countries are paying much attention to the study the battlefield awareness system, aiming to find out related targets timely, distinguish correctly and process rapidly. In 2002, the US military science consultation committee advised the army to improve their organization and technology to train better “prior battlefield awareness” ability. Recent years, the US army attached much importance to “network-centered war”, “action-centered war” and “sensor to shooter” operation methods, give prominence to the ability of awareness by wireless sensor network. The framework of battlefield awareness system proposed by Cui Xunxue is shown as Fig.1. Actioncentered war Networkcentered war From sensor to shooter Transparent battlefield and C4ISRT Battlefield awareness Application layer New battle model Military sensing Missile warning Military reconnaissance Sea surveillance Chemistry test Optical sensor Meteorology observation Information support Battlefield awareness Information obtain Information control Information comprehension Damage effect forecast and evaluation Battlefield space Troop deploy Target distinguish Network layer Internet Weapon distribution Multi-sensor integrate and data mining Mobile communication network Cloud computing Information technology center Information Transmission Battlefield environment Unmanned plane Satellite sensing Weapon control and guidance Weapon guide WSN Image Radar Reconnaissance and surveillance Information Process and application The army Sense layer Space based: Satellite sensing Air based: Reconnaissance /unmanned plane Ground based: WSN, RFID sensor Information obtain National information infrastructure Fig. 1. Framework of battlefield awareness system III. THE IOT TECHNOLIGY’S APPLICATION IN BATTLEFIELD AWARENESS The IOT technology’s application in battlefield awareness is a totally new notion of intelligent sense, location, tracking, monitoring and management, which promotes the integrated operation. A. Framework The infrastructure of IOT is to construct the “connecting all things” sense network, all the sensor nodes are the feelers in the battlefield environment. With the feelers, the IOT can sense the time and space information accurately, so as to monitor the real-time battlefield environment, transmit the active fight information and control the intelligent terminal. [10] To build the battlefield awareness information network supported by IOT technology, unmanned plane and artillery are used to cast the micro-sensor (such as sound, light, electromagnetic, shake, acceleration sensors) to the target area, so the sensors can detect and sense the equipment and track of the troops. At the same, these information are integrated with that obtained from the satellite, aircraft and ship sensors, then transmitted to the information technology center via the internet and mobile communication network, after process and analysis, an all-inclusive, all-spectrum, all-time reconnaissance and surveillance system is formed, which provides accurate target location and effect evaluation information, and improves joint battlefield awareness ability. Therefore, the IOT system can be a significant part of command, control, communication, computer, intelligence, surveillance reconnaissance and targeting system (C4ISRT). The framework of battlefield awareness system based on the IOT technology is shown as Fig. 2. Fig. 2. The framework of battlefield awareness system based on the IOT technology a. Sense layer The sense layer is the foundation of the IOT, and the link layer of the physical and information world. It works by connecting all kinds of information, and using network communication, information process, physical security reliability, middleware and gateway technology etc. for the purpose of realizing the sense and communication between the physical and information world. In the battlefield awareness system, the sensors play a very important role. The spatial sensing equipment especially sensing satellite is a significant power to provide real-time and accurate intelligence for the battlefield dynamic awareness. For example, the US army used seven optical imaging reconnaissance satellites such as the “Keyhole”, “Hong hockey” to take photos in Iraq, and operate fullscale target reconnaissance and battlefield surveillance, which greatly improves the battlefield awareness ability. Aviation reconnaissance force such as the reconnaissance plane can take carry out all-weather, alltime and all-orientation surveillance in the battlefield, while the unmanned plane can take its advantages of longrange and high-resolution, which is also very important in obtaining information. In the Iraq battlefield, the US army put ten kinds, more than ninety unmanned planes into the operation, including “Predator”, “Global hawk”, which became the largest action time in all previous battlefields [11] . Micro sensor nodes can be sent to the target area.In this case intensive, random distributed and low-cost wireless sensor network is formed. It collects all kinds of sensing information such as shock, press, sound, speed, temperature, humidity, light, magnetic field, radiation, and operates in hidden position to sense all-around battlefield information. For example, when the vehicles go through, the sensors attached to the ground can collect and integrate shock, sound signals, and send them to the headquarter. Traditional sensor nodes are limited to the computing ability and electrical energy, so they can only collect and transmit small data. Nowadays, new generation of sensors which are able to collect and transmit video signals have emerged. Simultaneously, given that the sensors are large and distributed randomly, when a part of sensors encounter attack, the whole network system would carry on by its high fault-tolerance ability. For this reason, wireless sensor network can adapt to terrible surroundings, and undertake tasks such as detecting the enemy’s troop deploy, equipment transmission, nuclear pollution, biochemistry, target positioning attack and battlefield evaluation. b. Network layer The middle layer of IOT is network layer, it works by transmitting all kinds of information obtained from the physical world by the internet, mobile communication network and virtual private network to the application layer effectively, reliably and safely, to realize the interact between man and machine, machine and machine. The information transmitted by the communication network contains not only text, sound, video multimedia and so on, but also all information such as location data from the sensors. Due to the information gathered from the sense layer consists of satellite remote sensing, reconnaissance plane and wireless sensor network data, the network layer is required to integrate multi-sensor data to mine as much battlefield information as possible. When it comes to how to process and distribute large quantity of sensor information quickly and effectively, “cloud computing” platform works, it may complete a certain task in dozens of minutes, while several hours before. It shows a new concept of computing. c. Application layer Application is the driver of the whole IOT, application layer combines IOT technology with the professional system, encapsulates the sensing data, and realizes the solution of extensive “connect all things”. In the connection with the decision maker, IOT needs to provide a customizing model under mass of information, and realizes a friendly, convenient, low consumption interactive system. The application layer’s key algorithms and software system are the major of IOT computing environment, which ensure the security and reliability of IOT system. The application layer combines strategic with tactic reconnaissance, dynamic and static surveillance, brings a all-weather, all-time battlefield sensing drawing, the formed “transparent” battlefield environment has a significant influence on reconnaissance and surveillance, weapon control and guide, damage effect forecast and evaluation. The intelligent, automatic and networking battlefield awareness system under IOT technology provides a better platform for the C4ISR. B. Key problems As a large and complicated information system, IOT technology still has some key problems to solve when applied to battlefield awareness. Among them are sensing system, cloud computing and information security. a. Intelligence of sensing system The sense layer is based on data and information obtained by sensor. The battlefield awareness is becoming more and more automatic and complicated, so the sensors are required to have high accuracy, reliability, stability, and the ability data process, self-check, self-adjust, selfcompensation. While traditional sensors cannot meet the demand, new generation of sensors are needed. High function sensor needs not only improved materials, but also chips to storage and process data. Therefore, the result of sensor combined with micro-processor is the merge of intelligent sensor. The intelligence of sensing system requires some functions as following. First, microprocessor should be embedded system, so it is possible to storage, distribute, process and transmit large information in a small sensor, then high technology and low-cost material are needed; Second, the intelligent sensor should have strong survival ability, including supplying energy for itself, self-networking and self-positioning; Third, the battlefield complicated magnetic environment has a serious impact on the sensors, once these sensors are damaged or used by the enemy, they should have the ability of self-destruction, at the same time, the quit of partial sensor nodes do not affect the whole network. b. Cloud computing and share platform Cloud computing is a new technology just as IOT, while different people have different opinion about it. IBM cooperation holds that: “Cloud computing is new kind of IT service, in which application data and computing resources can be provide to the clients quickly via network.” Cloud computing has some advantages such as integrated resources, service according to requirement, high-flexibility and low-cost. While applied to battlefield awareness, private or combined cloud will be built. It can provide an efficient, high-speed, accurate transmission and process platform. There are also some problems, on one hand, it needs a large cost when diverting the traditional exploit, deploy, maintain model to the those based on clouding computing, the cost is decided by the battlefield complexity and request. On the other hand, currently the reliability and security of cloud computing is not high, especially the security. Due to the lack of mature security support technology and related legal rules, cloud computing still has a long way to go when applied to battlefield awareness. c. Information transmission security and management Information transmission security and management is the premise of IOT application, also an significant symbol of the mature IOT system. The target of information transmission security and management is to ensure the obtained intelligence is secret, rounded and practicable. This request runs through the whole process of information collection, integration, transmission and decision. It has some problems like network system [12]. First, in data gather, transmission and security, sensing nodes are to simple to support complicated security function; there are some many kinds of sensing nodes and networks, while related standards are incomplete, so uniform security system is to be built urgently. Second, in the application security, the platform supporting IOT has different security strategies, the IOT application is facing challenges like large-scale, multi-platform and multi-type. Third, there also exists security protection problems in data process, access control of information gather, transmission and share should be established. In short, data-centered IOT is close to its application, its security target consists of privacy, data distinguish, integrity, usability, timeliness and so on. IV. CONCLUSION Battlefield awareness attracts more and more attention in the world. As a new technology, IOT plays an important role in battlefield awareness with its special advantages. Through comprehension about IOT and its military application, the thesis proposed the IOT framework of battlefield awareness, studied some related key problems, and settled the foundation of further studies. Simultaneously, because some key technologies remains unsolved, its military application is still in theory analysis and experiment period, there is still a long distance before practical application. 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