Development of a UWB GPR system for detecting small objects buried under ground

Park, Youngjin; Kim, Kwan-Ho; Cho, Sung-Bae; Yoo, Dong-Wook; Youn, Dong-Gi; Jeong, Young-Kyung

doi:10.1109/uwbst.2003.1267869

Cited by 11 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Potassium accumulation kg kg -1 kg ha -1 kg kg -1 kg ha only reduce soil bulk density but also increased soil porosity. This result is consistent with previous studies (Arvidsson et al, 1998;Karami et al, 2012;Mousavi et al, 2012;Soane et al, 1990). This could be because straw return could break plow bottom, increase tillage layer thickness, and improve soil structure significantly.…”

Section: K-absorption Efficiencysupporting

confidence: 94%

Effects of straw returning and potassium fertilizer application on root characteristics and yield of spring maize in China inner Mongolia

et al. 2021

View full text Add to dashboard Cite

Exploring the effects of straw return (ST) and potassium fertilizer on soil structure, spring maize (Zea mays L.) root growth, K-absorption efficiency and yield is essential for devising optimized straw return and potassium fertilizer management practices to increase grain yield for food security. In this study, two straw return levels used were straw return , no straw return and two potassium application levels used were 6K (90 kg/ha potassium application), no potassium (0K). Analyzed the effects of the above four treatments on soil structure, spring maize root indicators, K-absorption efficiency and yield in three ecological regions in two years. The results showed that the effect of straw return on soil structure and root growth was better than that of applying potassium fertilizer. The effect of potassium fertilizer application on maize grain yield and K-absorption efficiency was better than that of straw return. The impact of the interaction was better than straw return or the application potassium fertilizer alone. Straw return improved the effects of potassium fertilizer on soil bulk density, soil porosity, spring maize root length, root surface area, root volume, maize grain K-absorption efficiency and yield by 3.99%-7.27%, 3.89%-7.40%, 1.35%-71.01%, 19.16%-42.45%, 10.49%-22.73%, 13.57%-19.67% and 4.43%-7.05%, respectively. Therefore, the interaction of straw return and potassium fertilizer was the best measure to maintain high and stable maize yield, increasing K-absorption efficiency and improving the nutrient resource management of straw and potassium fertilizer, which was appropriate for spring maize planting. INTRODUCTIONMaize (Zea mays L.) is the largest grain crop in China and contributes more than 80% of China's grain production, which is the main force and the key to guarantee food security (Zheng, 2012). The production of maize in northwestern China was

show abstract

Section: K-absorption Efficiencysupporting

confidence: 94%

Effects of straw returning and potassium fertilizer application on root characteristics and yield of spring maize in China inner Mongolia

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Purpose Specifications [27] Detecting small metal objects in the Ground -Operating frequency-100-400MHz, Antenna-Broadband dipole antenna with 100MHz to 350MHz -Sampling interval-100ns PRF-10KHz, The separation between the antenna-0.8m [28] Surface probing, Pavement probing -Frequency of operation-100MHz to 1GHz, The center frequency of Antenna-100 MHz -PRF-300 KHz, Sampling interval-0.1ns, Antenna-Horn antenna with loading.…”

Section: Refmentioning

confidence: 99%

International Journal of Electronics and Telecommunications

Kumar,

Singh

et al. 2021

View full text Add to dashboard Cite

“…Several techniques designed to mitigate the adverse effects of GRI signals have been employed to date. They can be divided into several categories that each have unique shortfalls: (1) high-pass filtering in the along-track direction [1,2], (2) range-gate removal to remove the main lobe of GRI [1], and (3) change detection [3]. The high-pass filtering technique assumes that the GRI signals are quasi-stationary across the aperture.…”

Section: Introductionmentioning

confidence: 99%

Extraction of ground clutter return interference from downward-looking UWB radar signal via low-rank and sparse optimization

Nguyen¹,

Ranney²,

Kelly³

et al. 2023

Radar Sensor Technology XXVII

View full text Add to dashboard Cite

Ultra-wideband (UWB) ground-penetrating radar (GPR) technology has been widely employed for detecting underground targets, structures, or anomalies. However, the backscatter signals from the ground surface pose a critical challenge for downward-looking GPR systems since 1) these ground return signals have significant power compared to the backscatter signal from subsurface targets, and 2) the ground return and target signals completely overlap in both the time and frequency domains. This paper presents a technique for reconstructing and extracting the GRI signals from downward-looking UWB GPR signals. This simultaneous low-rank and sparse algorithm models the GRI signals as a low-rank matrix, while the return signals from the targets are represented by sparse signals. The solver simultaneously optimizes both objectives, resulting in the separation of the target signals from the GRI signals. Our technique performs this GRI extraction directly in the phase history data domain prior to synthetic aperture radar (SAR) image formation. Thus, it can be implemented as an additional step, completely independent from all other steps, in the pre-processing stage. Recovery results from both simulated and real data sets illustrate the robustness and effectiveness of our proposed technique.

show abstract

Development of a UWB GPR system for detecting small objects buried under ground

Cited by 11 publications

References 2 publications

Effects of straw returning and potassium fertilizer application on root characteristics and yield of spring maize in China inner Mongolia

Effects of straw returning and potassium fertilizer application on root characteristics and yield of spring maize in China inner Mongolia

International Journal of Electronics and Telecommunications

Extraction of ground clutter return interference from downward-looking UWB radar signal via low-rank and sparse optimization

Contact Info

Product

Resources

About