Digital elevation models (DEMs) can be generate by interferometric SAR (InSAR) and radargrammetry techniques from different positions of Synthetic Aperture Radar (SAR) images. Radar imaging systems record both the phase (or time) and intensity information of the backscattered signals. InSAR utilises the phase information of the images to extract useful geodetic information, such as the height o...

Synthetic aperture radar (SAR) sliding spotlight work mode can achieve high resolutions and wide swath (HRWS) simultaneously by steering the radar antenna beam. This paper aims to obtain well focused images using sliding spotlight mode with the Chinese Gaofen-3 SAR sensor. We proposed an integrated imaging scheme with sliding spotlight echoes. In the imaging scheme, the two-step approach is app...

The Orbiting Carbon Observatory (OCO), scheduled for launch in December 2008, will make the first space-based measurements of atmospheric CO2 with the precision, spatial and temporal resolution needed to characterize CO2 sources and sinks on regional spatial scales and seasonal to interannual time scales. Variations in surface topography have a direct impact on the retrieval of the columnaverag...

Synthetic aperture radar (SAR) interferometry (InSAR) is performed using repeat-pass geometry. InSAR technique is used to estimate the topographic reconstruction of the earth surface. The main problem of the range-Doppler focusing technique is the nature of the two-dimensional SAR result, affected by the layover indetermination. In order to resolve this problem, a minimum of two sensor acquisit...

A Synthetic Aperture Radar is an antenna which collects and stores all signals with respect to amplitude, phase, frequency, polarization and running time for gaining desired information with Special processing algorithms. This paper provides a review of the progress in regard to the InSAR remote sensing technique and its applications in earth and environmental sciences, especially in the past d...

In this contribution we report on ERS-ENVISAT Tandem (EET) cross-interferometry (CInSAR) results achieved over Egypt. Over the Nile Delta an EET pair with a perpendicular baseline of 1948m was used to generate a DEM. Thanks to the long perpendicular baseline EET CInSAR showed a good potential to generate accurate DEMs over this relatively flat landscape. The result achieved is compared with the...

Correlation between Interferometric Synthetic Aperture Radar (InSAR) pairs is essential for accurate interferometric phase estimation and digital elevation model (DEM) reconstruction. In this paper, a SAR simulator capable of generating Rayleigh and K-distributed terrain clutter and estimating correlation between InSAR passes will be presented. Furthermore, this simulator will be used to study ...

In order to improve the feasibility of low-elevation height measurement for meter-wave multiple-input multiple-output (MIMO) radar, a virtual sub-array-level beam splitting algorithm is proposed. The can solve coherence problems caused by low-angle multipath reflection, target reflection wave and direct coupling, quickly measure low elevation angle on flat ground, then obtain through geometric ...

To achieve sensitivity, comfort, and durability in vital sign monitoring, this study explores the use of radar technologies in wearable devices. The study first detected the respiratory rates and heart rates of a subject at a one-meter distance using a self-injection-locked (SIL) radar and a conventional continuous-wave (CW) radar to compare the sensitivity versus power consumption between the ...