Mr. Francesco Coppi Profile

Francesco Coppi

at IDS GeoRadar srl

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 9 October 2018 Paper

Performance evaluation of a new MMW Arc SAR system for underground deformation monitoring

M. Cecchetti, M. Rossi, F. Coppi

Proceedings Volume 10788, 107880B (2018) https://doi.org/10.1117/12.2323828

KEYWORDS: Lasers, Millimeter wave imaging, Radar, Synthetic aperture radar, Mining, 3D modeling, Interferometry, Sensors, Spatial resolution

Read Abstract +

The use of monitoring systems to detect wall movements in surface mining has emerged in the last ten years as a standard work and safety practice. The development and optimization of remote monitoring technologies like radar interferometry have greatly contributed to the anticipation of slope movements and to the reduction of incidents and fatalities related to slope failures. The same has not happened in the underground mining industry, where deformation monitoring of openings is in most cases still demanded to contact sensors like extensometers, micro-seismic gauges, strain gauges, fiber optic systems, which can provide only point information. The new HYDRA-U (HYper Definition Radar - Underground) radar system, designed by IDS GeoRadar, is a submillimeter accuracy radar interferometer operating at MMW (MilliMeter Wave) frequency; the system is able to produce an updated radar map every 30 seconds providing both range and angular resolution by performing FMCW Arc SAR acquisitions. In this research work a HYDRA-U unit has been extensively tested to measure the monitoring performances of the system and assess the actual applicability of this radar solution as a real-time ground fall early warning system. First tests have been performed in laboratory conditions using corner reflectors to assess the performance in terms of range resolution and angular resolution. Moreover, a motorized corner reflector with a micrometric movement control has been used to estimate the accuracy of the displacement measurement. The last part of the test consists in a long-term deployment in underground mining environment. The system has been deployed in an underground mine tunnel. During the test, the HYDRA-U system clearly picked up a moving area; the analysis of the interferometric data shows an evident developing trend with marked accelerations and periods of relative steadiness, which can be correlated with the intensity of the local mining activity.

Proceedings Article | 3 October 2017 Paper

Deformation vector measurement by means of ground based interferometric radar system

Alberto Michelini, Francesco Coppi

Proceedings Volume 10426, 1042605 (2017) https://doi.org/10.1117/12.2279147

KEYWORDS: Radar, Interferometry, Imaging systems, Remote sensing, Microwave radiation, Error analysis

Read Abstract +

Ground Based Interferometric Radar (GBInRad) is a class of terrestrial remote sensing imaging system, based on microwave interferometric techniques. The principal application of GBInRad system is deformation monitoring, since respect to other techniques they can provide remote sensing, high sensitivity to small deformations, long range of measurements, imaging capability and fast scan time. The main limitation of standard GBInRad system is their capability of detecting movements only along the Line of Sight (LoS) of the sensor, although actual targets may show deformations in any direction of space; this represents an important limitation with respect to other techniques able to estimate the full 3D deformation vector. If the displacement direction is not known a priori, combining together LoS displacement measured from different spatial positions, it is possible to reconstruct the actual 3D displacement vector of monitored targets. In this paper are introduced and analysed the various aspect of the displacement vector measurement with multiple GBInRad system that work both in a monostatic and in a bistatic configuration. In the monostatic configuration every system transmits and receives the signal independently from the others; this approach requires multiple GBInRad system deployed to monitoring the same scenario and therefore its main limitations lie in the costs, power consumption and maintenance. A possible cost-effective evolution of the monostatic configuration is to exploit GBInRad system in a multiple bistatic configuration; a multiple bistatic Radar is a system in which a transmitter operates together with multiple receivers located in different positions in space. In this paper, the deformation vector measurement by means of bistatic GBInRad is proposed.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years