Theoretical and experimental investigations of a ground-based high-resolution SAR for buried object detection

Schreiber, Eric; Peichl, Markus; Dill, Stephan; Anger, Simon; Heinzel, Andreas; Bischeltsrieder, Florian; Kempf, Timo; Jirousek, Matthias

doi:10.1109/eurad.2015.7346279

Cited by 6 publications

(8 citation statements)

References 7 publications

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“…Assuming a beam width θ e = 40 • and a depression angle α= 45 • , the ground-range resolution is between 10 cm in the near and 5.5 cm in the far range. The usable swath width is approximately 2.5 m. Due to the low flight altitude the resolution in cross-range δ cr depends on the slant range R [6]:…”

Section: The Gpsar Sensor Modulementioning

confidence: 99%

UAV-Based Ground Penetrating Synthetic Aperture Radar

Schartel¹,

Burr

Mayer

et al. 2018

2018 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM)

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A novel approach for anti-personnel landmine detection using an unmanned aerial vehicle (UAV) in combination with a ground penetrating synthetic aperture radar (GPSAR) is presented. The objective of the system is to accelerate the process of land release in humanitarian demining. Suspicious objects shall be detected by the radar and marked for further investigations using different sensor principles. The ground penetrating radar (GPR) module consists of a 1 GHz to 4 GHz side-looking frequency modulated continuous wave (FMCW) radar, a radar and lidar altimeter, and a real time kinematic global navigation satellite system (RTK GNSS). The image processing is done offline using a back-projection algorithm. In the theoretical part of this paper the system partitioning, the sensor module, and the position accuracy requirements are briefly described. In the experimental part of this paper synthetic aperture radar (SAR) measurements are presented.

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Section: The Gpsar Sensor Modulementioning

confidence: 99%

UAV-Based Ground Penetrating Synthetic Aperture Radar

Schartel¹,

Burr

Mayer

et al. 2018

2018 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM)

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“…In recent years, the naval ships have been equipped with some particular facilities which consume very high short-time energy in an intermittent fashion, such as high power radars, electromagnetic guns, and solid-state lasers [1][2][3]. These facilities are referred to collectively as pulsed power loads (PPLs) [4], and the existing literature [5,6] presented that the PPLs are not only equipped on ships but also vehicles and other ground combat platforms. Whether on shipboard or land, the PPL is usually connected to the power supply, which has limited generation and small inertia.…”

Section: Introductionmentioning

confidence: 99%

“…In (6), ω represents the system frequency; d m represents the peak value of switching function at the fundamental frequency; respectively, V and φ are the RMS value and phase angle of the three-phase voltages. Further, from (1) to (5), if set…”

mentioning

confidence: 99%

Large‐signal model of pulsed power load for analysis of dynamic voltage and frequency

Yan

Wang

Chen

et al. 2020

IET Generation, Transmission & Distribution

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“…Nevertheless, the implementation of these solutions is not straightforward in the context of UAVs. Ground-based GPR systems usually rely on large vehicles and trucks to carry large antenna arrangements (e.g., [30], [31], [32], [33], [34]). However, the integration of a GPR within a UAV is heavily constraint by the available space and weight in the platform, which directly impact the maximum flight time.…”

mentioning

confidence: 99%

“…In the case of [40] and [41], a single Tx is used, so the midpoint position changes when switching between Rx antennas. In contrast, a side-looking architecture is considered in [31], [32], and [33]. This system benefits from a significant separation between Txs and Rxs, which are also at different heights, to obtain 3-D images.…”

mentioning

confidence: 99%

Array-Based Ground Penetrating Synthetic Aperture Radar on Board an Unmanned Aerial Vehicle for Enhanced Buried Threats Detection

García-Fernández

Álvarez-Narciandi

Álvarez-López

et al. 2023

IEEE Trans. Geosci. Remote Sensing

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The usage of unmanned aerial vehicles (UAVs)based ground penetrating radar (GPR) systems has gained interest over the last years thanks to advantages over ground-based systems, such as contactless inspection and capability, to reach difficult-to-access areas. The former is of paramount importance concerning the detection of buried threats, such as improvised explosive devices (IEDs) and landmines. Current state-of-the-art UAV-based GPR systems are able to provide centimeter-level resolution thanks to the use of GPR-synthetic aperture radar (SAR) processing techniques. One of the challenges to keep improving these systems is the scanning throughput, that is, the area that can be scanned in a given time. This contribution presents an array-based GPR-SAR system for subsurface imaging, aiming at maximizing the scanning throughput without jeopardizing the imaging capabilities of the system. First, the antenna array is mounted on a portable setup to evaluate its performance and imaging capabilities. Next, the antenna array is integrated into the UAV platform, and the UAV-based GPR-SAR system with the array is tested in realistic scenarios with different kinds of buried targets. Results show that the scanning throughput is significantly improved and, furthermore, the coherent combination of all transmitting-receiving channels of the array provides enhanced detection capabilities.

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Theoretical and experimental investigations of a ground-based high-resolution SAR for buried object detection

Cited by 6 publications

References 7 publications

UAV-Based Ground Penetrating Synthetic Aperture Radar

UAV-Based Ground Penetrating Synthetic Aperture Radar

Large‐signal model of pulsed power load for analysis of dynamic voltage and frequency

Array-Based Ground Penetrating Synthetic Aperture Radar on Board an Unmanned Aerial Vehicle for Enhanced Buried Threats Detection

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