Balloon-Borne UAV Surveillance for Terrain-Resilient Detection
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Solution Overview
Problem
Current low-altitude UAV surveillance systems face challenges in detecting and tracking small UAVs due to terrain masking, urban interference, and high-angle errors, leading to inadequate detection and countermeasure effectiveness, especially in mountainous and densely populated areas like Seoul and Gyeonggi-do, where ground-based radars are limited by terrain and atmospheric conditions.
Innovation Solution
A low-altitude unmanned aerial vehicle surveillance system comprising a balloon main body with integrated radar, camera units, image transmission, and remote control devices, equipped with wind power generation, electro-optical, and infrared sensors, along with jamming and spoofing capabilities, to detect and intercept UAVs efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground-based radar is used for low-altitude UAV detection, then detection capability is provided, but terrain masking and urban interference degrade detection accuracy and reliability
Solution Approach 1:
The patent deploys radar sensors on aerial platforms (balloons, UAVs, aircraft) instead of ground-based installations, transitioning the detection system from two-dimensional ground surface to three-dimensional aerial space. This dimensional change allows radar waves to propagate above terrain obstacles and urban structures, eliminating terrain masking and building interference that degrade ground-based radar performance.
Solution Approach 2:
The patent introduces aerial platforms as intermediary carriers for radar sensors. These platforms serve as mediators between the radar system and the ground target, positioning the radar in an intermediate aerial layer that provides unobstructed detection paths while maintaining reliable detection capability over mountainous and urban terrains.
2Productivity
If ground-based radar operates in mountainous terrain, then surveillance is provided, but terrain masking reduces detection range and accuracy
Solution Approach 1:
By deploying radar on aerial platforms, the system moves detection operations from the ground level (constrained by terrain) to the aerial dimension where mountain peaks and valleys no longer block radar waves. This enables continuous surveillance coverage over mountainous regions that would be impossible for ground-based radars.
3Reliability
If ground-based radar is used in urban areas, then detection is provided, but atmospheric heat and diffuse reflection reduce reliability
Solution Approach 1:
The aerial deployment of radar sensors positions them above the urban atmospheric boundary layer, reducing exposure to ground-heated air currents and thermal turbulence. This dimensional relocation minimizes the impact of atmospheric heat-induced diffuse reflection and improves detection reliability in densely populated urban environments.
4Productivity
If ground-based radar tracks low-altitude aircraft, then tracking is provided, but multipath interference decreases accuracy and increases error signals
Solution Approach 1:
Aerial radar platforms eliminate multipath interference by positioning the radar above ground-level reflectors (buildings, terrain). The radar waves travel in more direct paths to and from low-altitude aircraft without bouncing off ground surfaces, significantly reducing tracking errors and improving measurement precision.
5Ease of operation
If visual surveillance is used for UAV detection, then observation is provided, but limited altitude range reduces effectiveness
Solution Approach 1:
The patent replaces human visual surveillance with electronic radar and optical sensing systems mounted on aerial platforms. This substitution extends the detection range from the limited human visual horizon to radar line-of-sight distances, while maintaining ease of operation through automated detection and tracking systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances detection and tracking capabilities of small UAVs in challenging environments by providing real-time surveillance and effective countermeasures, such as jamming and spoofing, while reducing the need for costly interceptor systems and minimizing secondary damage.
Implementation Method 1
a balloon main body filled with gas and staying in air
Implementation Method 2
equipped with wind power generation
Data Source
AI summary
Disclosed is a low-altitude unmanned aerial vehicle surveillance system. According to an embodiment, monitoring is performed using a balloon main body filled with gas and staying in the air; radar; camera units being provided outside the balloon main body, and including a camera taking an image of a subject; radio frequency detectors; and sound detectors and correspondingly, interceptor means is included. As interceptor means, a jammer, a jamming gun, and a spoofing device corresponding to jamming are disclosed.