علمی - پژوهشی
M.Sc of RS & GIS, Shahid Beheshti University

Ali akbar Matkan; Babak Mirbagheri; Abbas Beigi; Mostafa Ghiyasvand

Volume 7, Issue 4 , November 2015, Pages 1-12

Abstract
  Researchers have always been looking for better ways to develop the design, operation and implementationofwater distribution networks in GIS.Despite,extensivegeographical potentials of GIS,however, it cannot be independently considered as a spatial decision support system (SDSS) for management of this ...  Read More

علمی - پژوهشی
Analysis of Dust Storm Effects on Reflectance Spectra of Wheat Canopy

H.A Bahrami; S Mirzaei; A Darvishi Boloorani

Volume 7, Issue 4 , November 2015, Pages 13-26

Abstract
  In recent years, dust storm has become a common phenomenon in West Asia and especially Iran. This phenomenon is affecting almost all aspects of life including fauna and flora as well as human life. This research aimed to investigate the effects of dust storms on the wheat canopy, that are the most important ...  Read More

علمی - پژوهشی
Dust storms monitoring and predicting, using remote sensing, geographic information systems and observational data based on NDVI and climate elements A Case Study :( South and South East of Iran)

Ehsan Tamassoki1; Asadollah Khoorani; Ali Dervishi Bolorany; Ahmad noheghar

Volume 7, Issue 4 , November 2015, Pages 27-44

Abstract
  Wind erosion and dust storms are of major environmental hazards all around the world. Because of The extent of arid and semiarid regions in South and South- East of Iran and the successive incidence of this phenomenon in this region, it is important to study these phenomena. The aim of this study is ...  Read More

علمی - پژوهشی
A Method for Detectors Stripe Noise Correction in Landsat5 TM Images

M.R Mobasheri; E Amraie

Volume 7, Issue 4 , November 2015, Pages 45-60

Abstract
  Detectors noises in satellite images are seen as either vertical or horizontal stripes. The directions of these stripes depend on the imaging technique (Pushbroom or Wiskbroom). The main reasons in appearance of stripe noises in TM images are; lack of matching between detectors, unsuitable calibration ...  Read More

علمی - پژوهشی
A Performance Evaluation of Local Descriptors

A Sedaghat; H Ebadi

Volume 7, Issue 4 , November 2015, Pages 61-84

Abstract
  A descriptor is computed on a local region around a feature point and is used to characterize and compare the features. Various descriptors have been proposed in the literature which have different properties and performance in different image data. Evaluation of the local feature descriptor is important ...  Read More

علمی - پژوهشی
Estimation of Forest Stand Volume Using ICESat/GLAS Data in Mountainous Forests in the North of Iran

M Rajabpour Rahmati; A.A Darvishsefat; N Baghdadi; Manochehr Namiranian; Nosrat ollah Zargham

Volume 7, Issue 4 , November 2015, Pages 85-98

Abstract
  Forest volume as an important factor in forest management was aimed to be measured in mountainous forests in the North of Iran using spaceborne LiDar. Two missions of GLAS (L3K and L3I) were preprocessed to remove inappropriate waveforms. Several waveform metrics including waveform extent (Wext), lead ...  Read More

علمی - پژوهشی
Comparing Landsat Water Indices for Automated Narrow-Shallow Rivers (Case Study: A Section of Karoon River)

E Taherian; H Samadi

Volume 7, Issue 4 , November 2015, Pages 99-116

Abstract
  Strategic decisions about the construction of engineering structures along the river which are essential for the management of sediment entering the reservoir will be facilitated by understanding the behavior and characteristics of the sedimentation of rivers leading to large dam reservoirs. Multi-temporal ...  Read More