Application of GNSS-R for wetlands mapping using the Android phone device and u-blox GNSS module

Helicopters and low-cost Android GPS receivers can be a promissing tool for wetland remote sensing. Lazar Jeftic, the R&D specialist at Vojvodjanska privredna avijacija, Ciklonizacija Logistika – Novi Sad, AP Vojvodina, Republic of Serbia has more for us Wetlands are areas that are inundated or saturated either permanently or intermittently and support vegetation types that… More

GIRAS; a GNSS-IR Analysis Software

Recently, a GNSS-IR analysis software has been published online offering a handy graphical user interface, which tends to become a popular alternative to existing software packages and tools. This MATLAB-based open-source software package is GIRAS. GNSS-IR has become a robust method to extract the characteristic environmental features of reflected surfaces, in which, fluctuations in the… More

Improving GNSS-R ability in mean sea level measurement; a new paper on Turkish Mediterranean coast

GNSS antennas are designed to suppress the reflected signal before it reaches the antenna. However, some of the reflected signals interfere with the direct signal, leading to a multipath effect in the GNSS observations. Reflected signals are used in many remote sensing applications. The determination of sea level variations is also included in these applications.… More

GNSS-Scatterometry Challenges in Lake Ice Remote Sensing

Delay-Doppler Maps (DDMs) have already shown promising potentials in the sea ice remote sensing, including ice recognition and sea ice thickness estimation. However, this kind of products is yet to be tested for lake ice remote sensing, which looks more challenging than that of sea ice, especially for mid-latitude ones. Generally speaking, two main approaches… More

GNSS Reflectometry Using Smartphones; A Potential for Lake Ice Thickness Monitoring

SNR-based GNSS-Reflectometry has shown an enormous potential for ground-based altimetry purposes as the frequency of SNR oscillations is directly connected to antenna height from the reflective surface. This technique, which is usually called in the literature as GNSS Interferometric Reflectometry, has been already tested for retrieving snow depth, monitoring water level changes, and measuring lake… More

Can Small Changes in Water Surface Topography be Detected by GNSS Reflectometry?

Precipitation detection over ocean using various radar remote sensing techniques have been fully understood and tested for several decades. But in terms of GNSS Reflectometry, researchers had been skeptical about its potential as a rain detector. Recently, a groundbreaking paper has been published by Dr. Milad Asgarimehr and his colleagues addressing this question cropping up in another paper published three years… More


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