中文
相关论文

相关论文: SMAP-based retrieval of vegetation opacity and alb…

200 篇论文

Characterizing the surfaces of rocky exoplanets via the scattered light will be an essential challenge to investigate the existence of life on habitable exoplanets. We present a simple reconstruction method for fractional areas of different…

地球与行星天体物理 · 物理学 2014-11-20 Y. Fujii , H. Kawahara , Y. Suto , A. Taruya , S. Fukuda , T. Nakajima , E. L. Turner

Research into large-scale crop monitoring has flourished due to increased accessibility to satellite imagery. This review delves into previously unexplored and under-explored areas in sugarcane health monitoring and disease/pest detection…

计算机视觉与模式识别 · 计算机科学 2025-03-10 Ethan Kane Waters , Carla Chia-Ming Chen , Mostafa Rahimi Azghadi

Sunlight radiation under snow-covered sea ice obtained from remote sensing could help assess under-ice primary production at pan-Arctic scale. Yet, the current remote sensing methods to estimate sunlight transmittance under sea ice is…

大气与海洋物理 · 物理学 2026-01-13 Christophe Perron , Bastian Raulier , Philippe Massicotte , Martin Vancoppenolle , Marcel Babin

There have recently been several claims of an asymmetric distribution of large scale fluctuations in the WMAP data. I review some recent results from a test of isotropy of the power spectrum at all scales and show how the power is…

天体物理学 · 物理学 2007-05-23 F. K. Hansen

We constrain the thermal evolution of the universe with a decaying cosmological term by using the method of the analysis for the Wilkinson Microwave Anisotropy Probe (WMAP) observation data. The cosmological term is assumed to be a function…

天体物理学 · 物理学 2008-11-26 Riou Nakamura , Masa-aki Hashimoto , Kiyotomo Ichiki

Characterizing soil moisture (SM) around drip irrigation pipes is crucial for precise and optimized farming. Machine learning (ML) approaches are particularly suitable for this task as they can reduce uncertainties caused by soil conditions…

图像与视频处理 · 电气工程与系统科学 2024-06-07 Mohammad Ramezaninia , Mohammadreza Shams , Mohammad Zoofaghari

The calibration of ground-based submillimetre observations has always been a difficult process. We discuss how to overcome the limitations imposed by the submillimetre atmosphere. Novel ways to improve line-of-sight opacity estimates are…

Accurate soil moisture (SM) estimation is critical for precision agriculture, water resources management and climate monitoring. Yet, existing satellite SM products are too coarse (>1km) for farm-level applications. We present a…

The ASAS-SN Low Surface Brightness Survey utilizes the $\sim7$ years of g-band CCD data from ASAS-SN (The All-Sky Automated Survey for Supernovae) to create stacked images of the entire sky. It is significantly deeper than previous…

Near-field energy coupling between two surfaces may arise from frustrated total-internal-reflectance and from atomic dipole-dipole interaction. Such an exchange of energy, if at resonance, greatly enhances the radiation transfer between an…

综合物理 · 物理学 2009-11-05 A. Meulenberg , K. P. Sinha

The solar radiation spectrum is important for renewable energy harvesting, as well as climate and ecological systems analysis. In addition to seasonal/annual and diurnal oscillations, the signal is composed of different frequencies ($f$)…

地球物理 · 物理学 2018-11-01 Golan Bel , Mahesh M. Bandi

We describe our methodology for comparing the WMAP measurements of the cosmic microwave background (CMB) and other complementary data sets to theoretical models. The unprecedented quality of the WMAP data, and the tight constraints on…

An improved method for subtracting contaminants from Cosmic Microwave Background (CMB) sky maps is presented, and used to estimate how well future experiments will be able to recover the primordial CMB fluctuations. We find that the naive…

天体物理学 · 物理学 2015-06-24 Max Tegmark , George Efstathiou

Measurements of the cosmic microwave background (CMB) allow high precision observation of the Last Scattering Surface at redshift $z\sim$1100. After the success of the NASA satellite COBE, that in 1992 provided the first detection of the…

The Wilkinson Microwave Anisotropy Probe WMAP has mapped the entire sky in five frequency bands between 23 and 94 GHz with polarization sensitive radiometers. We present three-year full-sky maps of the polarization and analyze them for…

We study microwave background anisotropies induced by scaling seed perturbations in a universe dominated by cold dark matter. Using a gauge invariant linear perturbation analysis, we solve the perturbation equations on super-horizon scales,…

天体物理学 · 物理学 2009-10-30 Ruth Durrer , Mairi Sakellariadou

We report a scaling of the mean matter density with the width of the saturated Lyman alpha absorptions. This property is established using the ``pseudo-hydro'' technique (Croft et al. 1998). It provides a constraint for the inversion of the…

天体物理学 · 物理学 2009-11-07 Hu Zhan

Transmission spectroscopy has been successfully used from both the ground and in space to characterise the atmospheres of transiting exoplanets. This technique is challenging from the ground because ground-based spectrographs tend not to be…

地球与行星天体物理 · 物理学 2015-06-16 C. M. Copperwheat , P. J. Wheatley , J. Southworth , J. Bento , T. R. Marsh , V. S. Dhillon , J. J. Fortney , S. P. Littlefair , R. Hickman

The microwave imaging system(MIS) stands out among prominent imaging tools for capturing images of concealed obstacles. Leveraging its capability to penetrate through heterogeneous environments MIS has been widely used for subsurface…

图像与视频处理 · 电气工程与系统科学 2024-03-12 Mohammad Ramezaninia , Mohammad Zoofaghari

Geometric environment information aids future distributed radio infrastructures in providing services, such as ultra-reliable communication, positioning, and wireless power transfer (WPT). An a priori known environment model cannot always…

信号处理 · 电气工程与系统科学 2023-05-10 Benjamin J. B. Deutschmann , Maximilian Graber , Thomas Wilding , Klaus Witrisal