The maturity of unattended Ground sensor (UGS) technologies is accelerating as the range of fully funded military applications increases. These applications however can still suffer from the Stovepipes of the past and...
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The maturity of unattended Ground sensor (UGS) technologies is accelerating as the range of fully funded military applications increases. These applications however can still suffer from the Stovepipes of the past and UGSs still cannot claim to be a panacea for remote engagement of enemy forces. Presented in this paper is a vision of the emergence of Disposable Organic sensors Network (DOSNs) systems. This paper will discuss the reasons, drivers and technologies that support this concept and discuss some of the platform tradeoffs that can enable the correct balance between the different platform types. This paper is supported by trial and testing results from both the platforms and sensors perspective, and draws on the development and capability of low cost UGS, unmanned Air Vehicles (UAV) and unmanned Ground Vehicles (UGV) technologies funded by the UK Ministry of Defence (MOD).
Tactical unmanned aerial vehicles (TUAV) are low observable aircraft that are susceptible to acoustic detection by unattended ground sensors because of the high levels of radiated noise generated by the propulsion mec...
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Tactical unmanned aerial vehicles (TUAV) are low observable aircraft that are susceptible to acoustic detection by unattended ground sensors because of the high levels of radiated noise generated by the propulsion mechanism (engine and propeller). This paper presents an acoustic signature analysis of a typical TUAV and demonstrates, using real data, the potential of both narrowband and broadband single-sensor based methods for estimating the flight parameters of a TUAV. Also, a broadband cross-correlation technique is applied to the sensor signals of a 3-element circular array to estimate the angular trajectory of a transiting TUAV.
The maturity of unattended ground sensor (UGS) technologies is accelerating as the range of fully funded military applications increases. These applications however can still suffer from the stovepipes of the past and...
详细信息
The maturity of unattended ground sensor (UGS) technologies is accelerating as the range of fully funded military applications increases. These applications however can still suffer from the stovepipes of the past and UGSs still cannot claim to be a panacea for remote engagement of enemy forces. Presented in This work is a vision of the emergence of disposable organic sensors network (DOSNs) systems. This work discusses the reasons, drivers and technologies that support this concept and discuss some of the platform tradeoffs that can enable the correct balance between the different platform types. This paper is supported by trial and testing results from both the platforms and sensors perspective, and draws on the development and capability of low cost UGS, unmanned air vehicles (UAV) and unmanned ground vehicles (UGV) technologies funded by the UK Ministry of Defence (MOD).
Bistatic radar has been considered for many years as an element of ground based air defense systems to counter against low observable airframes. To achieve these benefits, it is necessary to deploy the network of bist...
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Bistatic radar has been considered for many years as an element of ground based air defense systems to counter against low observable airframes. To achieve these benefits, it is necessary to deploy the network of bistatic radar elements across an area where a large proportion of the reflected energy is anticipated. For security and vulnerability reasons this network is typically deployed within safe, protected areas. This requirement limits the range of applications to which bistatic and multi-static radar can be applied. The recent emergence of unattended ground sensors (UGS) and uninhabited air vehicle (UAV), systems shows that these platforms are sufficiently mature for consideration as remote receiver/transmitter sites. However for this to be realized it is essential that the cost, capability and vulnerability of these sensors is considered. Within This work a multi-static radar tool which is used to compare a range of multi-static radar network distributions is described. This tool is used to assess detection capability and hence indicate comparative costs for two geometric targets frying a linear path.
With the number of small, inexpensive unmanned Air Vehicles (UAVs) increasing, it is feasible to build multi-UAV sensing networks. In particular, by using UAVs in conjunction with unattended ground sensors, a degree o...
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ISBN:
(纸本)081944930X
With the number of small, inexpensive unmanned Air Vehicles (UAVs) increasing, it is feasible to build multi-UAV sensing networks. In particular, by using UAVs in conjunction with unattended ground sensors, a degree of persistent sensing can be achieved. With proper UAV cooperation algorithms, sensing is maintained even though exceptional events, e.g.,. the loss of a UAV. have occurred. In this paper a cooperation architecture is described that allow's multiple UAVs to perform coordinated, persistent sensing with unattended ground sensors over a wide area. This architecture automatically adapts the UAV paths so that on the average, the amount of time that any sensor has to wait for a UAV revisit is minimized. We also describe the Simulation, Tactical Operations and Mission Planning (STOMP) software. STOMP is designed to help simulate and operate distributed sensornetworks where multiple UAVs are used to collect data.
The technical objectives of this effort are to develop low cost sensor packages optimized for three types of unmanned platforms: UGVs (unmanned Ground Vehicles), SUAVs (Small unmanned Aerial Vehicles), and UGS (Unatte...
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ISBN:
(纸本)0819444936
The technical objectives of this effort are to develop low cost sensor packages optimized for three types of unmanned platforms: UGVs (unmanned Ground Vehicles), SUAVs (Small unmanned Aerial Vehicles), and UGS (unattended Ground sensors). Additional goals are to develop robust (secure, jam resistant, stealthy) communications to network these sensor systems throughout complex terrain, develop command and control (C2) software tools to include mission planning, monitoring, dynamic re-planning, sensor planning and management functions;and to demonstrate a system-of-systems capability when fusing information from these various unmannedsensor systems. These capabilities provide the battlefield commander organic unmannedsensor network assets to complete his Battlespace Situational Awareness (BSA) picture for targeting, direct and indirect-fire weapons, and threat avoidance. The networked sensors will provide remote monitoring of areas of interest out to similar to10km not covered by higher echelon surveillance assets and without placing soldiers in harm's way, will increase unit areas of coverage (force multiplier), and will provide near real time BSA and targeting data for early warning to speed decision making and reaction time.
Despite improvements in both data compression and transmission technologies in recent years, video bandwidth constraints continue to limit performance of sensornetworks. Furthermore, prolonged mission lifetimes requi...
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ISBN:
(纸本)0819440914
Despite improvements in both data compression and transmission technologies in recent years, video bandwidth constraints continue to limit performance of sensornetworks. Furthermore, prolonged mission lifetimes require that sensor nodes operate with minimal power. Dynamically Reconfigurable Vision (DRV) seeks to collect only visual information that is relevant to the vision task(s) at hand, and thus to make more effective use of available bandwidth and computational resources than is possible with conventional imaging technology. This is achieved through the intelligent, dynamic allocation of spatial and temporal sensing resources in response to the dynamics of the scene itself. Minimization of irrelevant data in the video processing chain reduces processing requirements and allows communication of more information in real-time over bandwidth-limited channels. This leads to a reduction in sensor node power consumption, complexity, size, and cost. Last year, we presented the design of our prototype DRV camera, featuring a real-time reconfigurable CMOS imager and a fast ethernet interface. The DRV sensor array supports 3 overlapping, independently-configurable, time-correlated windows per frame. In its typical configuration, one window continuously detects new regions of interest within a wide FOV, while the other 2 windows operate concurrently as independent tracking windows: Tracking rates can exceed several hundred Hertz. Independent gain and offset control for each window permits contrast enhancement within a selectable localized region of the FOV. Here, we report on a prototype system developed around this camera, which includes simply a host laptop, power supply, and an ethernet cable. This camera is capable of operating under either manual control, or under the control of automatic target detection and tracking algorithms. Our roadmap for ongoing and future DRV development work is described, including the designs for a megapixel DRV camera with a true snapshot
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