A Low Cost Active Corner Reflector to assist Snow Monitoring through Sentinel/1 images

Luzi, G.; Fernández, Emilio; Perez, F. Mira; Crosetto, Michele

doi:10.23919/eucap48036.2020.9135273

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…The antenna patterns, shown in Figure 3 in different representations, were measured in an anechoic chamber using a calibrated standard horn: the maximum gain is 17.3 dB. The value expected from the simulation, 18 dB, is very close; thus, demonstrating a good design and manufacturing [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

A Low-Cost Active Reflector for Interferometric Monitoring Based on Sentinel-1 SAR Images

Luzi

Espin-Lopez

Perez

et al. 2021

Sensors

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The effectiveness of radar interferometric techniques in non-urban areas can often be compromised due to the lack of stable natural targets. This drawback can be partially compensated through the installation of reference targets, characterized by a bright and stable radar response. The installation of passive corner reflectors (PCR) often represents a valid aid, but these objects are usually cumbersome, and suffer from severe weather conditions; furthermore, the installation of a PCR can be difficult and costly, especially in places with hard accessibility. Active reflectors (AR) represent a less cumbersome alternative to PCRs, while still providing a stable phase response. This paper describes the design, implementation, and test of an AR prototype, designed to operate with the Sentinel-1 synthetic aperture radar (SAR), aimed at providing a fair performance/cost benefit. These characteristics, obtained through a tradeoff between the use of off-the-shelf components and a simple architecture, can make the setup of a dense network (i.e., tens of devices) in the monitored areas feasible. The paper reports the design, implementation, and the analysis of different tests carried out in a laboratory, and in a real condition in the field, to illustrate AR reliability and estimate its phase stability.

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Section: Methodsmentioning

confidence: 99%

A Low-Cost Active Reflector for Interferometric Monitoring Based on Sentinel-1 SAR Images

Luzi

Espin-Lopez

Perez

et al. 2021

Sensors

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“…The effectiveness of the use of active reflectors as an alternative to PCR has been debated in the last years thanks to the availability of a few commercial apparatus [17] and research prototypes [18]. The available solutions have not proved to be fully satisfactory for a main issue, that is the instability of their phase response correlated to environmental temperature variation, which can be not negligible especially for wide temperature range.…”

Section: Introductionmentioning

confidence: 99%

A low-cost active reflector and a passive corner reflector network for assisting landslide monitoring using multi-temporal InSAR

Luzi

Barra

Gao

et al. 2022

Remote Sensing Letters

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A C-band Low-cost Active Reflector (AR) has been tested in a real experimental campaign aimed at monitoring through Multi-temporal InSAR an area threatened by a landslide that occurred in 2019. To monitor and characterize the movement, a network of eight Passive Corner Reflectors and one ActiveReflector were installed along a forested slope. A set of 285 interferograms obtained combining 60 Sentinel-1 SAR images were processed to evaluate the stability of the area. The AR, installed in a stable location close to the landslide, was used to provide a reference point in this low coherence area. Despite the high sensitivity of the phase response of such devices to temperature changes, the device operates with a stability of ± 2mm in deformation retrieval, a value acceptable for monitoring purposes, with a moderate range of temperature values.

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Software-defined Corner Reflector for Satellite SAR Systems

Piccioni

Alesii

Santucci³

et al. 2022

2022 IEEE Aerospace Conference (AERO)

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A Low Cost Active Corner Reflector to assist Snow Monitoring through Sentinel/1 images

Cited by 4 publications

References 3 publications

A Low-Cost Active Reflector for Interferometric Monitoring Based on Sentinel-1 SAR Images

A Low-Cost Active Reflector for Interferometric Monitoring Based on Sentinel-1 SAR Images

A low-cost active reflector and a passive corner reflector network for assisting landslide monitoring using multi-temporal InSAR

Software-defined Corner Reflector for Satellite SAR Systems

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