Concept design of a near-space radar for tsunami detection

Galletti, Michele; Krieger, Gerhard; Börner, Thomas; Marquart, Nicolas; Schultz-Stellenfleth, J.

doi:10.1109/igarss.2007.4422723

Cited by 16 publications

(5 citation statements)

References 9 publications

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“…A tsunami is a series of giant ocean waves caused by an earthquake, submarine, landslide, volcanic eruption under the sea, meteorite impact, or combination [1]. Indonesia is one of the countries prone to this natural disaster.…”

Section: Introductionmentioning

confidence: 99%

Microstrip Rectangular Patch Array Antenna for Tsunami Radar

Fitrilina

Haidi

Alex

et al. 2022

JNTE

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Radar tsunami merupakan salah satu alat deteksi yang digunakan pada system peringatan awal tsunami. Radar tsunami yang umum digunakan adalah radar High frekuensi yang memiliki jarak jangkauan jauh tetapi daya besar dan resolusi rendah. Untuk meningkatkan keandalan system peringatan tsunami dalam mendeteksi tanda-tanda tsunami dan monitoring dengan kecepatan update informasi yang tinggi, maka diperlukan system radar dengan resolusi yang tinggi. Resolusi yang tinggi dapat diperoleh jika radar memiliki bandwidth yang besar dalam spectrum radio. Peningkatan bandwidth dapat dilakukan dengan menaikan frekuensi kerja radar. Antena merupakan salah satu komponen penting yang dapat menentukan performa system radar. Oleh karena itu pada penelitian ini dirancangan antenna pada Super High Frequency untuk diaplikasikan pada system radar. Antena yang dirancang adalah antenna microstrip dengan patch rectangular. Spesifikasi yang diinginkan pada frekuensi 5,8 Ghz yaitu return loss≤-10 dB, VSWR≤2, bandwidth >150 Mhz, beamwidth>200. Setelah rancangan menggunakan simulasi memenuhi spesifikasi maka dilakukan pabrikasi dan pengukuran. Hasil pengukuran didapatkan pergeseran frekuensi menjadi 5,71 Ghz dengan return loss -21,346, VSWR 1,186, Bandwitdh 200 Mhz dan beamwidth 400 Oleh karena itu dapat dikatakan bahwa antenna yang dirancang dapat digunakan pada system radar tsunami

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Section: Introductionmentioning

confidence: 99%

Microstrip Rectangular Patch Array Antenna for Tsunami Radar

Fitrilina

Haidi

Alex

et al. 2022

JNTE

View full text Add to dashboard Cite

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“…It is strongly emphasized that, for remote sensing, the NSVBR fills the gap between ground-based radar, space-borne radar and airborne radar [5,9,10,11,12]. …”

Section: Introductionmentioning

confidence: 99%

“…Because there is a large speed difference between the transmit and the receive platforms, a multi-beamforming and scan-on-receive combined approach is presented to extend the limited imaging coverage [9]. A new concept for tsunami detection is proposed with the application of an NSVBR [11], whose advantage point is that it is conceived of to protect the population from local tsunamis.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Target Detection with a Near-Space Vehicle-Borne Radar in Blackout Condition

Wang

et al. 2016

Sensors

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Radar is a very important sensor in surveillance applications. Near-space vehicle-borne radar (NSVBR) is a novel installation of a radar system, which offers many benefits, like being highly suited to the remote sensing of extremely large areas, having a rapidly deployable capability and having low vulnerability to electronic countermeasures. Unfortunately, a target detection challenge arises because of complicated scenarios, such as nuclear blackout, rain attenuation, etc. In these cases, extra care is needed to evaluate the detection performance in blackout situations, since this a classical problem along with the application of an NSVBR. However, the existing evaluation measures are the probability of detection and the receiver operating curve (ROC), which cannot offer detailed information in such a complicated application. This work focuses on such requirements. We first investigate the effect of blackout on an electromagnetic wave. Performance evaluation indexes are then built: three evaluation indexes on the detection capability and two evaluation indexes on the robustness of the detection process. Simulation results show that the proposed measure will offer information on the detailed performance of detection. These measures are therefore very useful in detecting the target of interest in a remote sensing system and are helpful for both the NSVBR designers and users.

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“…It has been proven that there is a link between tsunami wave amplitude and its microwave RCS, and significant (a few dB) variations of the RCS synchronous with the sea level anomaly has been found both at C and Ku band in the geophysical data record of the altimetry satellite Jason-1 [76,77]. From the view of microwave active remote sensing, the detectable oceanographic features of a tsunami wave can be summarized as [12]: (1) tsunami wave height, (2) tsunami orbital velocities, (3) tsunami-induced RCS modulations. It has been proved the capability of microwave radars to detect internal waves [78], which are generally triggered by tides.…”

Section: Potentials and Challengesmentioning

confidence: 99%

“…Little work on the use of near-space sensors for communication and navigation applications has been reported [11,12]. Even less effort has been devoted to new radar imaging techniques based on near-space platforms [13].…”

Section: Introductionmentioning

confidence: 99%

Near-Space Microwave Radar Remote Sensing: Potentials and Challenge Analysis

2010

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Near-space, defined as the region between 20 km and 100 km, offers many new capabilities that are not accessible to low earth orbit (LEO) satellites and airplanes, because it is above storm and not constrained by either the orbital mechanics of satellites or the high fuel consumption of airplanes. By placing radar transmitter/receiver in near-space platforms, many functions that are currently performed with satellites or airplanes could be performed in a cheaper way. Inspired by these advantages, this paper introduces several near-space vehicle-based radar configurations, such as near-space passive bistatic radar and high-resolution wide-swath (HRWS) synthetic aperture radar (SAR). Their potential applications, technical challenges and possible solutions are investigated. It is shown that near-space is a satisfactory solution to some specific remote sensing applications. Firstly, near-space passive bistatic radar using opportunistic illuminators offers a solution to persistent regional remote sensing, which is particularly interest for protecting homeland security or monitoring regional environment. Secondly, near-space provides an optimal solution to relative HRWS SAR imaging. Moreover, as motion compensation is a common technical challenge for the described radars, an active transponder-based motion compensation is also described.

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Concept design of a near-space radar for tsunami detection

Cited by 16 publications

References 9 publications

Microstrip Rectangular Patch Array Antenna for Tsunami Radar

Microstrip Rectangular Patch Array Antenna for Tsunami Radar

Performance Evaluation of Target Detection with a Near-Space Vehicle-Borne Radar in Blackout Condition

Near-Space Microwave Radar Remote Sensing: Potentials and Challenge Analysis

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