Validation of models and algorithms for microwave radiometric investigations of tropical cyclones

Petrenko, B.; Nerushev, A. F.; Milekhin, L. I.; Zagorin, G.K.

doi:10.1109/igarss.1997.615885

Cited by 2 publications

(5 citation statements)

References 11 publications

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“…2 shows a typical satellite picture with the contours of the cyclone mapped. Active contours are defined as energy-minimizing splines under the influence of internal and external forces [16]. The internal forces of the active contour serve as a smoothness constraint that holds the active contour together and stops it from bending too much.…”

Section: A Preprocessing With Active Contour (Gvf) Modelmentioning

confidence: 99%

“…where P is the number of points in M. The definition of the undirected MHD is the same as (16). A few outlier points, even only a single one, can perturb the distance considerably, though the two objects might be very similar.…”

Section: B a Modified Hausdorff Distancementioning

confidence: 99%

“…Obviously, the development of a method for their early identification would allow more time for endangered communities to take suitable precautions. In recent years, there has been considerable research into forecasting techniques that make use of devices such as scatterometers [9], microwave radiometers [16], and QuikSCAT [24]. To date, the information generated by these devices has required skilled human interpretation.…”

Section: Introductionmentioning

confidence: 99%

“…In [23], the authors introduced two techniques to speed up the search process, FastMap, which results in false dismissals, [16][17][18][19][20][21]2006 and lower bound techniques, which satisfy the triangle inequality. [3] introduced a new definition of similarity by regarding a time series as a multi-dimensional position vector, thus allowing any scaling and shifting operation on the sequences to be regarded as, respectively, vector multiplication and vector addition.…”

Section: Introductionmentioning

confidence: 99%

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Tropical Cyclone Forecast using Angle Features and Time Warping

Liu

Bao²,

Wang³

et al. 2006

The 2006 IEEE International Joint Conference on Neural Network Proceedings

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The most popular approach to comparing two given Tropical Cyclones (TCs) is to measure the distance between various contour points of the TC extracted from a satellite image. However, this measure has a very high computational cost as it involves many point-to-point calculations. Moreover, this measure does not reflect the most distinctive features of a tropical cyclone, their spiral shape. In this paper, we propose the use of angle features and time warping for TC forecast. The Gradient Vector Flow (GVF) snake model is applied to extract the contour points of a dominant tropical cyclone from the satellite image. Dvorak templates are used as references to predict the intensity of the tropical cyclone. Given two sets of contour points, one for each tropical cyclone, we retrieve the similarity of two shapes using angle features found among the successive contour points. We adopt a time warping approach to produce a fast and accurate result. Experimental results have shown that our approach is better than other conventional comparison approaches such as Hausdorff distance measure.

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Section: A Preprocessing With Active Contour (Gvf) Modelmentioning

confidence: 99%

Section: B a Modified Hausdorff Distancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tropical Cyclone Forecast using Angle Features and Time Warping

Liu

Bao²,

Wang³

et al. 2006

The 2006 IEEE International Joint Conference on Neural Network Proceedings

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“…The sensibility of Stokes vector microwave emission from sea surface, rainfall and cloud to wind speed vector and its gradients can be used for the retrieval of wind characteristics within tropical cyclones even in the rain band near the wall of the cyclone's ''eye.'' The wind speed parameter measurements give information related to the space distribution of the pressure within the tropical cyclone, which is an important characteristic of its life cycle [Petrenko et al, 1997]. As a new independent information canal the third Stokes vector component can be used for detection of precipitation areas over land and ocean and together with other measurements for the solution of the ''beam filling'' problem.…”

Section: Introductionmentioning

confidence: 99%

Two‐dimensional synthetic aperture millimeter‐wave radiometric interferometer for measuring full‐component Stokes vector of emission from hydrometeors

Kutuza

Zagorin

2003

Radio Science

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Calculations of attainable values for space resolution and radiometric sensibility of a spaceborne two‐dimensional synthetic aperture microwave polarimetric interferometer are carried out. It is shown that for the most preferable Y‐shaped interferometer configuration, it is possible to achieve (within the transparency windows of waveband 3–22.5 mm) a space resolution of 0.5–1 km and a radiometric resolution close to 1 K at the receiver bandwidth of 100 MHz. For cross‐ and T‐shaped resolutions, values close to the above can be reached.

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Validation of models and algorithms for microwave radiometric investigations of tropical cyclones

Cited by 2 publications

References 11 publications

Tropical Cyclone Forecast using Angle Features and Time Warping

Tropical Cyclone Forecast using Angle Features and Time Warping

Two‐dimensional synthetic aperture millimeter‐wave radiometric interferometer for measuring full‐component Stokes vector of emission from hydrometeors

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