Journal of Applied Remote Sensing http://scitation.aip.org/ Journal of Applied Remote Sensing Azimuth preprocessing for monostatic and bistatic spotlight synthetic aperture radar maging based on spectral analysis convolution http://link.aip.org/link/?JRS/3/033565/1&agg=rss Lei Zhang, Chengwei Qiu, Mengdao Xing, and Zheng Bao<br/> Dechirping is a technique widely used to reduce sampling rate. It is well suited for the illumination of small scenes. In this paper, we extend this idea to mono/bistatic spotlight synthetic aperture radar (SAR) imaging. An azimuth preprocessor based on the spectral analysis (SPECAN) convolution is ... [J. Appl. Remote Sens. 3, 033565 (2009)] published Fri Nov 13, 2009. Effect of target surface orientation on the range precision of laser detection and ranging systems http://link.aip.org/link/?JRS/3/033564/1&agg=rss Steven E. Johnson<br/> Airborne laser detection and ranging (LADAR) systems are used for applications such as three-dimensional imaging, topographic mapping, and target recognition. Typical systems transmit laser beams through apertures that are a few inches wide and use pulses that are roughly a nanosecond in duration. ... [J. Appl. Remote Sens. 3, 033564 (2009)] published Thu Nov 12, 2009. Effects of changing rice cultural practices on C-band synthetic aperture radar backscatter using Envisat advanced synthetic aperture radar data in the Mekong River Delta http://link.aip.org/link/?JRS/3/033563/1&agg=rss Nguyen Lam-Dao, Thuy Le Toan, Armando Apan, Alexandre Bouvet, Frank Young et al.<br/> Changes in rice cultivation systems have been observed in the Mekong River Delta, Vietnam. Among the changes in cultural practices, the change from transplanting to direct sowing, the use of water-saving technology, and the use of high production method could have impacts on radar remote sensing met ... [J. Appl. Remote Sens. 3, 033563 (2009)] published Thu Nov 12, 2009. Use of airborne remote sensing to detect riverside Brassica rapa to aid in risk assessment of transgenic crops http://link.aip.org/link/?JRS/3/033562/1&agg=rss Luisa M. Elliott, David C. Mason, Joel Allainguillaume, and Mike J. Wilkinson<br/> High resolution descriptions of plant distribution have utility for many ecological applications but are especially useful for predictive modeling of gene flow from transgenic crops. Difficulty lies in the extrapolation errors that occur when limited ground survey data are scaled up to the landscap ... [J. Appl. Remote Sens. 3, 033562 (2009)] published Mon Nov 9, 2009. Change detection in remote sensing images using modified polynomial regression and spatial multivariate alteration detection http://link.aip.org/link/?JRS/3/033561/1&agg=rss Rouhollah Dianat and Shohreh Kasaei<br/> A new and efficient method for incorporating the spatiality into difference-based change detection (CD) algorithms is introduced in this paper. It uses the spatial derivatives of image pixels to extract spatial relations among them. Based on this methodology, the performances of two famous differenc ... [J. Appl. Remote Sens. 3, 033561 (2009)] published Mon Nov 9, 2009. Retrieval of refractive index over specular surfaces for remote sensing applications http://link.aip.org/link/?JRS/3/033560/1&agg=rss Sungwook Hong<br/> Polarization knowledge is important to detect object characteristics. An approximate relationship between vertically and horizontally polarized reflectivities of specular surfaces is developed and validated using the refractive index datasets of water in the various wavelength ranges at various inci ... [J. Appl. Remote Sens. 3, 033560 (2009)] published Thu Oct 29, 2009. Development and assessment of combined Terra and Aqua snow cover products in Colorado Plateau, USA and northern Xinjiang, China http://link.aip.org/link/?JRS/3/033559/1&agg=rss Hongjie Xie, Xianwei Wang, and Tiangang Liang<br/> This study presents our methods to produce multi-day Terra, Aqua, and Terra-Aqua moderate resolution imaging spectroradiometer (MODIS) snow cover composite images respectively from daily Terra MODIS, Aqua MODIS, and both Terra and Aqua MODIS snow cover products, with flexible starting and ending dat ... [J. Appl. Remote Sens. 3, 033559 (2009)] published Thu Oct 29, 2009. Urban land use and land cover classification using the neural-fuzzy inference approach with Formosat-2 data http://link.aip.org/link/?JRS/3/033558/1&agg=rss Ho-Wen Chen, Ni-Bin Chang, Ruey-Fang Yu, and Yi-Wen Huang<br/> This paper presents a neural-fuzzy inference approach to identify the land use and land cover (LULC) patterns in large urban areas with the 8-meter resolution of multi-spectral images collected by Formosat-2 satellite. Texture and feature analyses support the retrieval of fuzzy rules in the context ... [J. Appl. Remote Sens. 3, 033558 (2009)] published Thu Oct 29, 2009. Guest Editorial: Recent Advances in Remote Sensing of Wildland Fires in the Eastern United States http://link.aip.org/link/?JRS/3/031599/1&agg=rss John J. Qu and Stephen D. Ambrose<br/> Abstract not available. ... [J. Appl. Remote Sens. 3, 031599 (2009)] published Tue Oct 20, 2009. Water productivity mapping using remote sensing data of various resolutions to support "more crop per drop" http://link.aip.org/link/?JRS/3/033557/1&agg=rss Xueliang Cai, Prasad S. Thenkabail, Chandrashekhar M. Biradar, Alexander Platonov, Murali Gumma et al.<br/> The overarching goal of this research was to map crop water productivity using satellite sensor data at various spectral, spatial, radiometric, and temporal resolutions involving: (a) Moderate Resolution Imaging Spectroradiometer (MODIS) 500m, (b) MODIS 250m, (c) Landsat enhanced thematic mapper plu ... [J. Appl. Remote Sens. 3, 033557 (2009)] published Mon Oct 12, 2009. Modified vegetation indices for Ganoderma disease detection in oil palm from field spectroradiometer data http://link.aip.org/link/?JRS/3/033556/1&agg=rss Helmi Z. M. Shafri, M. Izzuddin Anuar, and M. Iqbal Saripan<br/> High resolution field spectroradiometers are important for spectral analysis and mobile inspection of vegetation disease. The biggest challenges in using this technology for automated vegetation disease detection are in spectral signatures pre-processing, band selection and generating reflectance in ... [J. Appl. Remote Sens. 3, 033556 (2009)] published Mon Oct 12, 2009. Analysis of seven-year moderate resolution imaging spectroradiometer vegetation water indices for drought and fire activity assessment over Georgia of the United States http://link.aip.org/link/?JRS/3/033555/1&agg=rss Lingli Wang, John J. Qu, Xiaoxiong Xiong, and Xianjun Hao<br/> Using a seven-year history of the satellite measurements and meteorology data over Georgia, USA, this study investigated the capability of a series of satellite-derived vegetation water indices for drought monitoring, as well as the connection between fire occurrence and drought conditions. The veg ... [J. Appl. Remote Sens. 3, 033555 (2009)] published Thu Oct 8, 2009. Algorithm for automatic image registration on Harris-Laplace features http://link.aip.org/link/?JRS/3/033554/1&agg=rss Weixing Wang, Daijian Luo, and Weisheng Li<br/> In order to overcome the difficulty of automatic registration between the images of different rotations and resolutions, this paper presents a new image registration algorithm. In the algorithm, Harris-Laplace detector is applied to extract image features; a method named scale-space projection based ... [J. Appl. Remote Sens. 3, 033554 (2009)] published Thu Oct 8, 2009. Sub-canopy soil moisture inversion using repeat pass Shuttle Imaging Radar C polarimetric Synthetic Aperture Radar interferometric data http://link.aip.org/link/?JRS/3/033553/1&agg=rss Xinwu Li, Huadong Guo, Zhen Li, Huanyin Yue, and Quan Chen<br/> The advances in polarimetric synthetic aperture radar (SAR) interferometry techniques provide a promising way to extract sub-canopy surface parameters using processed SAR images. In this paper, we evaluate the fully maximum likelihood decomposition model of polarimetric SAR interferometry for sub-ca ... [J. Appl. Remote Sens. 3, 033553 (2009)] published Thu Oct 8, 2009. Automated imagery orthorectification pilot http://link.aip.org/link/?JRS/3/033552/1&agg=rss E. Terrence Slonecker, Brad Johnson, and Joe McMahon<br/> Automated orthorectification of raw image products is now possible based on the comprehensive metadata collected by Global Positioning Systems and Inertial Measurement Unit technology aboard aircraft and satellite digital imaging systems, and based on emerging pattern-matching and automated image-to ... [J. Appl. Remote Sens. 3, 033552 (2009)] published Wed Oct 7, 2009. Optimal land use/land cover classification using remote sensing imagery for hydrological modeling in a Himalayan watershed http://link.aip.org/link/?JRS/3/033551/1&agg=rss Sameer Saran, Geert Sterk, and Suresh Kumar<br/> Land use/land cover is an important watershed surface characteristic that affects surface runoff and erosion. Many of the available hydrological models divide the watershed into Hydrological Response Units (HRU), which are spatial units with expected similar hydrological behaviours. The division int ... [J. Appl. Remote Sens. 3, 033551 (2009)] published Fri Oct 2, 2009. Supervised classification of multispectral remote sensing images based on the nearest reduced convex hull approach http://link.aip.org/link/?JRS/3/033550/1&agg=rss Jianjun Qing, Hong Huo, and Tao Fang<br/> In this paper, we propose a novel learning algorithm, the nearest reduced convex hull (NRCH), to tackle the issue of limited training information in practical remote sensing. Before classification, the "underlying" prototypes in the training subspace of each class are approximated by constrained con ... [J. Appl. Remote Sens. 3, 033550 (2009)] published Fri Oct 2, 2009. Comparative data mining analysis for information retrieval of MODIS images: monitoring lake turbidity changes at Lake Okeechobee, Florida http://link.aip.org/link/?JRS/3/033549/1&agg=rss Ni-Bin Chang, Ammarin Daranpob, Y. Jeffrey Yang, and Kang-Ren Jin<br/> In the remote sensing field, a frequently recurring question is: Which computational intelligence or data mining algorithms are most suitable for the retrieval of essential information given that most natural systems exhibit very high non-linearity. Among potential candidates might be empirical regr ... [J. Appl. Remote Sens. 3, 033549 (2009)] published Thu Sep 17, 2009. Neural network cloud screening algorithm, Part I: A synthetic case over land using micro-windows in O and CO near infrared absorption bands with nadir viewing http://link.aip.org/link/?JRS/3/033548/1&agg=rss Thomas E. Taylor and D. M. O'Brien<br/> A neural network is presented for estimating cloud water and ice paths, effective scattering heights of cloud water and ice, and column water vapor. The cloud water and ice are then used to classify scenes as either clear or cloudy using a simple threshold test of 2 gm for water and 10 gm for ice. T ... [J. Appl. Remote Sens. 3, 033548 (2009)] published Wed Sep 9, 2009. Phytoplankton bloom due to Cyclone Sidr in the central Bay of Bengal http://link.aip.org/link/?JRS/3/033547/1&agg=rss Srinivasa K. Tummala, Raghavendra S. Mupparthy, Nagaraja Kumar M., and Shailesh R. Nayak<br/> The evidence of phytoplankton bloom in response to the cyclone Sidr in the central Bay of Bengal (BoB) basin has been reported. Satellite observations of surface chlorophyll-a concentration (Chl-a) from MODIS-Aqua, sea surface temperature (SST) from MODIS-Aqua and TMI were studied for before, during ... [J. Appl. Remote Sens. 3, 033547 (2009)] published Tue Sep 8, 2009. Anomaly detection in hyperspectral imagery: comparison of methods using diurnal and seasonal data http://link.aip.org/link/?JRS/3/033546/1&agg=rss Patrick C. Hytla, Russell C. Hardie, Michael T. Eismann, and Joseph Meola<br/> The use of hyperspectral imaging is a fast growing field with many applications in the civilian, commercial and military sectors. Hyperspectral images are typically composed of many spectral bands in the visible and infrared regions of the electromagnetic spectrum and have the potential to deliver ... [J. Appl. Remote Sens. 3, 033546 (2009)] published Thu Sep 3, 2009. Comparison of pixel and sub-pixel based techniques to separate Pteronia incana invaded areas using multi-temporal high resolution imagery http://link.aip.org/link/?JRS/3/033545/1&agg=rss John Odindi and Vincent Kakembo<br/> Remote Sensing using high resolution imagery (HRI) is fast becoming an important tool in detailed land-cover mapping and analysis of plant species invasion. In this study, we sought to test the separability of Pteronia incana invader species by pixel content aggregation and pixel content de-convolut ... [J. Appl. Remote Sens. 3, 033545 (2009)] published Wed Aug 26, 2009. Landcover classification of small-footprint, full-waveform lidar data http://link.aip.org/link/?JRS/3/033544/1&agg=rss Amy L. Neuenschwander, Lori A. Magruder, and Marcus Tyler<br/> Full-waveform lidar data are emerging into the commercial sector and provide a unique ability to characterize the landscape. The returned laser waveforms indicate specific reflectors within the footprint (vertical structure), while the shape of the return convolves surface reflectance and physical t ... [J. Appl. Remote Sens. 3, 033544 (2009)] published Wed Aug 26, 2009.