Improvement of antenna decoupling in radar systems

Anchidin, Liliana; Topor, Raluca; Tamas, Razvan D.; Dumitrascu, Ana; Dănişor, Alin; Berescu, Serban

doi:10.1117/12.2070179

Cited by 3 publications

(1 citation statement)

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“…The Radio Frequency (RF) input and output of the USRP are connected to Vivaldi antennas and a RF attenuator through a couple of digitally-controlled RF switches. The antennas are selected for their wide-band and simple fabrication 4,5 . The switches are computer controlled through an Arduino Uno board as depicted in figure 1a.…”

Section: Methodsmentioning

confidence: 99%

Software-defined ground-based synthetic aperture radar interferometry

Silvestru

Paun²,

Tamas³

2023

Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies XI

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This paper presents an experimental implementation of ground-based interferometric synthetic aperture radar based on the low cost USRP platform and a computer. The purpose of the proposed system is to measure small displacements of the monitored targets over a long time period. These types of measurements are particularly useful in the field of civil engineering and ecology. Common applications are landslide monitoring or bridge and building deformation analysis, as well as glacier movement monitoring. The system implements stepped-frequency radar operation with a maximum bandwidth of 1500 MHz (500 -2000 MHz). As expected with all interferometric measurements, due to the cyclic nature of the phase shift, the displacement must be smaller than a certain fraction of the wavelength of operation; otherwise the result will be ambiguous. In our case the displacement must be smaller (in absolute value) than a quarter of the transmitted wavelength. Due to the fact that in a software-defined radio the frequency is user selectable in a very wide range, the system can be configured to adapt to the magnitude of the expected displacement.

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Section: Methodsmentioning

confidence: 99%