This letter presents preliminary results of an attempt to monitor rice crop growth using RADARSAT-2 quad polarization synthetic aperture radar (SAR) data. Three quad-polarization SAR images are collected from transplanting harvesting. Ground truth data, such as height and biomass, measured during data acquisition in Hainan Province, South China. The correlation between backscattering coefficient parameters is analyzed, then, a field mapping method with image developed. Experiments show that...

High-resolution synthetic aperture radar (SAR) data have been widely used in marine environmental protection, monitoring, and traffic management. Ship detection is one of the important parts SAR for applications. This letter focuses on feature analysis ships high-resolution images proposes an improved optimizing algorithm ship detection. A fast block detector designed to extract sea clutter a uniform local area, then constant false alarm rate employed. Based kernel density estimation ships,...

Ship monitoring has a wide range of applications in marine activities and maritime management. Spaceborne synthetic aperture radar (SAR) technology an advantage ship detection over vast region compared to other technologies. Recently, high-resolution SAR satellites have made recognition classification possible from space. In July 2010, campaign was performed the East China Sea. situ investigation types carried out during periods when Italian COSMO-SkyMed passed test site. Automatic...

Qinghai–Tibet plateau (QTP) is closely related to global climate change, and it has undergone serious permafrost degradation due warming in the last decades. It crucial measure active layer thickness (ALT) for characterizing monitoring of QTP. In this paper, an ALT retrieval model based on ground subsidence derived from synthetic aperture radar interferometry (InSAR), land cover types, groundwater information proposed. particular, surface retrieved using time-series InSAR technique with...

Ship classification in high-resolution synthetic aperture radar (SAR) satellite images is a hotspot and continuing problem SAR applications. The scattering components of ships are the strong scatter objects images, these can represent superstructure different ship types. Based on analyses bulk carriers, oil tankers, container ships, we propose new method for three types COSMO-SkyMed images. First, morphological preprocessing applied to suppress sidelobes. Second, based Hough transform (HT),...

Climate change and human activity are changing the dynamics of Qinghai-Tibet Plateau (QTP) environmental balance, which impacts safety stability its infrastructure. The Railway (QTR) is longest structure in QTP, some sections QTR's embankment have been damaged due to freezing thawing permafrost. In this article, a modified SAR interferometry (InSAR) method for deformation monitoring proposed implemented. method, seasonal model based on simplified Stefan equation has adopted measure...

Soil ionization has a great effect on the performance of grounding electrodes fed by currents high magnitude. In this paper, numerical method is proposed to analyze transient system, which takes account dynamic and nonlinear effects soil ionization. The couples moment with circuit theory Fourier transform. system considering compared that not effect.

Early diagnosis of tumor markers is great importance for the successful treatment cancer. As a high-throughput and high-sensitivity detection technology, liquid suspension biochips based on quantum dot (QD) encoded microspheres have been widely used in immunodetection markers. In this work, maleic anhydride grafted PLA (PLA-MA) encoding were as carriers phase immunoassay PLA-MA fluorescent beads are prepared by embedding CdSe/ZnS dots using Shirasu porous glass (SPG) membrane emulsification...

When dc current is injected into the earth through grounding electrodes of a high-voltage direct (HVDC) system, transformers in ac system may be under bias if currents flowing are large enough. In this paper, numerical method coupling moments (MoM) to circuit equations presented calculate distribution power caused by an HVDC system. The MoM used electric fields complex structure all systems including electrodes, substation and long metal pipe lines. coupled moment take account effects...

The objectives of this paper are to investigate the capability hybrid polarimetric synthetic aperture radar (SAR) data for rice mapping and explore relationships between information biophysical parameters. linear polarization ratio (μ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</sub> ) is analyzed on basis reflection symmetry simulated data, has been demonstrated behave similarly HH/VV ratio, which widely used in wheat mapping. degree (P...

In this paper, a generalized modified mesh current method is developed for the simulation of lightning-caused electromagnetic transients on thin-wire structures above and buried in lossy ground. Four coupling mechanisms among conductors, namely, inductive coupling, resistive conductive capacitive are all considered. comparison to based electric-field integral equation moments, new formulation has several attractive features: 1) it accurate from dc MHz does not have low-frequency breakdown...

Ship classification with spaceborne high resolution synthetic aperture radar (SAR) has wide applications in maritime traffic monitoring, fishing law-enforcement operation, marine security, etc. Deep learning, which the ability of learning features itself, is successfully used computer vision and artificial intelligence, introduced into remote sensing field recent years. In this study, Italian COSMO-SkyMed SAR images acquired on Jul. 12-15, 2010 were for ship convolution neural networks...

This paper presents a supervised polarimetric synthetic aperture radar (PolSAR) change detection method applied to specific land cover types. For each pixel of PolSAR image, its target scattering vector can be modeled as having complex multivariate normal distribution. Based on this assumption, the joint distribution two corresponding vectors in pair images is derived. Then, generalized likelihood ratio test statistic for equality functions such considered and maximum distance measure types...

Recently, a light-emitting diode (LED) was used as an optical source in the transmitter for underwater wireless communication (UWOC) because it has large divergence angle that makes establishing link easier. In practice, there are several discrete LEDs to enlarge its output power. However, with increase number of LEDs, parasitic resistance and inductance light is larger too, which affects quality modulated signal. Also, using more enlarges luminous surface, disadvantageous improving...

Among many indoor positioning technologies, pseudolite technology has become an important supplement to GNSS. In open environments, can usually perform high-precision positioning. However, in a complex environment, the receiver is seriously interfered by multipath and other interference signals, which will lead serious decline observation accuracy, signal lock loss or even no results. Therefore, this work proposes anti-multipath based on reference estimating delay loop (Ref-MEDLL). It adds...

By acquiring information over a wide area regardless of weather conditions and solar illumination, space-borne Synthetic Aperture Radar (SAR) has the potential to be promising application for traffic monitoring. However, backscatter character vehicle in SAR image is unstable varies with parameters, such as aspect incidence angle. To investigate detectability images monitoring applications, four common types vehicles China were acquired using fully polarimetric (FP) Radarsat-2 our...

With the urban transport system has been unable to keep up with rapid growth of travel needs, many traffic network run in a state beyond ability. Traffic congestion seriously affected normal operation bus. The bus signal priority technology can make full use existing infrastructure, integration people mode, effective mitigation congestion. This paper mainly studies theory signals based on SCOOT, including principle and method priority, optimizes SCOOT strategy, which provides implementation...