Search Results - "Ardalan, Alireza A."

Geoid’s potential $$W_0$$ from a weighted constrained optimization problem by Karimi, Roohollah, Ardalan, Alireza A.

Get full text

Geoid’s potential W0 from a weighted constrained optimization problem by Karimi, Roohollah, Ardalan, Alireza A.

“…The aim of this study is to estimate the geoid’s potential value, W 0 , based on a weighted constrained optimization problem (WCOP) utilizing the most recent…”
Get full text

Uncovering sea level patterns in Caspian Sea altimetry data by A. Ardalan, Alireza, Hashemifaraz, Asiyeh

“…This study introduces a technique to uncover concealed patterns in satellite altimetry data, reflecting sea level variations in inland water bodies. We applied…”
Get full text

The Iranian height datum offset from the GBVP solution and spirit-leveling/gravimetry data by Ebadi, Amir, Ardalan, Alireza A., Karimi, Roohollah

“…The gravity potential of the zero point of the Iranian height datum (IRHD) is determined as well as the IRHD offset from a global geoid. For this purpose, the…”
Get full text

Tidal modeling based on satellite altimetry observations of TOPEX/Poseidon, Jason1, Jason2, and Jason3 with high prediction capability: A case study of the Baltic Sea by Alireza A. Ardalan, Asiyeh Hashemifaraz

“…This research aims to optimize the utilization of long-term sea level data from the TOPEX/Poseidon, Jason1, Jason2, and Jason3 altimetry missions for tidal…”
Get full text

On performance of vertical gravity gradient determined from CryoSat-2 altimeter data over Arabian Sea by Zhou, Ruichen, Liu, Xin, Li, Zhen, Sun, Yu, Yuan, Jiajia, Guo, Jinyun, Ardalan, Alireza A

“…SUMMARY High-precision and high-resolution satellite altimetry data from CryoSat-2 are widely utilized for marine gravity inversion. The vertical gravity…”
Get full text

Regional improvement of global geopotential models using GPS/Leveling data by Mosayebzadeh, Mahdi, Ardalan, Alireza A., Karimi, Roohollah

“…Global geopotential models are widely used in the remove-compute-restore technique for local gravity field modeling. In this paper, a method for regional…”
Get full text

Methods comparison for attitude determination of a lightweight buoy by raw data of IMU by Jouybari, Arash, Amiri, Hadi, Ardalan, Alireza A., Zahraee, Niloofar K.

“…•Using the commercial algorithm (Xsens Kalman Filter) as the reference for comparing.•Using magnetometer observations to calculate more precisely in Madwick…”
Get full text

Using high-resolution satellite imagery to provide a relief priority map after earthquake by Ranjbar, Hamid Reza, Ardalan, Alireza A., Dehghani, Hamid, Saradjian, Mohammad Reza

“…After the earthquake occurrence, collecting correct information about the extent of damage is essential for managing critical conditions and allocating limited…”
Get full text

A time series analysis of permanent GNSS stations in the northwest network of Iran by Ghasemi Khalkhali, Seyed Amin, A. Ardalan, Alireza, Karimi, Roohollah

“…The aim of this study is to estimate reliable velocities along with their realistic uncertainties based on a robust time series analysis including analysis of…”
Get full text

A solution to dynamic errors-in-variables within system equations by Mahboub, Vahid, Saadatseresht, Mohammad, Ardalan, Alireza A.

“…We noticed that if INS data is used as system equations of a Kalman filter algorithm for integrated direct geo-referencing, one encounters with a dynamic…”
Get full text

A general weighted total Kalman filter algorithm with numerical evaluation by Mahboub, Vahid, Saadatseresht, Mohammad, Ardalan, Alireza A.

“…An applicable algorithm for Total Kalman Filter (TKF) approach is proposed. Meanwhile, we extend it to the case in which we can consider arbitrary weight…”
Get full text

Reference surfaces of the planet Mercury from MESSENGER by Karimi, Roohollah, Ardalan, Alireza A., Farahani, Soheil Vasheghani

“…•The reference surfaces of the planet Mercury from MESSENGER are studied.•The studied reference surfaces are the geoid and the reference ellipsoid.•The…”
Get full text

An iterative method for attitude determination based on misaligned GNSS baselines by Ardalan, Alireza A., Rezvani, Mohammad-Hadi

“…Multiple Global Navigation Satellite System (GNSS) antennae systems have been among the well-known approaches to attitude determination of moving platforms in…”
Get full text

Performance comparison of numerical inversion methods for Laplace and Hankel integral transforms in engineering problems by Raoofian Naeeni, M., Campagna, R., Eskandari-Ghadi, M., Ardalan, Alireza A.

“…Different methods for the numerical evaluations of the inverse Laplace and inverse of joint Laplace–Hankel integral transforms are applied to solve a wide…”
Get full text

Hydrodynamic Tidal Model of the Persian Gulf Based on Spatially Variable Bed Friction Coefficient by Sohrabi Athar, Mostafa, Ardalan, Alireza A., Karimi, Roohollah

“…The aim of this study is to develop a two-dimensional hydrodynamic tidal model for the Persian Gulf (PG2017) using 2D-MIKE21 software. The advantages of…”
Get full text

Applying Satellite Altimetry to Wetland Water Levels Monitoring (Case Study: Louisiana Wetland) by Khajeh, Saman, Jazireeyan, Iraj, Ardalan, Alireza A.

“…The idea of the application of satellite radar altimetry for inland water study has been considered for about two decades. It has always been much challenging,…”
Get full text

Frequency Domain Analysis of an Axisymmetric Thermoelastic Transversely Isotropic Half-Space by Hayati, Yazdan, Eskandari-Ghadi, Morteza, Raoofian, Mehdi, Rahimian, Mohammad, Ardalan, Alireza A

“…AbstractBy virtue of a new complete scalar potential function, an analytical formulation is presented to determine displacements, stresses, and temperature in…”
Get full text

Ray-traced tropospheric delays in VLBI analysis by Nafisi, Vahab, Madzak, Matthias, Böhm, Johannes, Ardalan, Alireza A., Schuh, Harald

“…We develop a ray‐tracing package for the calculation of path delays of microwave signals in the troposphere based on numerical weather models which we use for…”
Get full text

Absolute calibration of satellite altimetry using linear regression and harmonic analysis by Jazireeyan, Iraj, Ardalan, Alireza A.

“…The calibration of satellite radar altimetry has been extremely important for altimetry community and studying sea level changes. The main purpose of this…”
Get full text