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CE 597 Radar Remote Sensing - Purdue Universityperissin/CE597_radar... · 2017-08-25 · CE 597...
Transcript of CE 597 Radar Remote Sensing - Purdue Universityperissin/CE597_radar... · 2017-08-25 · CE 597...
"A few observation and much reasoning lead to error; many observations and a little reasoning to truth".
Alexis Carrel
Discovery of bacteria:Antony van Leeuwenhoek (1632-1723)
CE 597 Radar Remote Sensing
To see the bacteria, you need a microscope…
Microwaves Target to monitor
Radar Remote Sensing
Over-sensed!
2002 Master in Telecommunication Engineering, Politecnico di Milano, Italy2006 PhD degree in Information Technology, Politecnico di Milano, Italy
Till 2009 Assistant researcher in Politecnico di Milano, Italy
The lecturer
Oct 2009 – Oct 2013, Research Assistant Prof., ISEIS, CUHK
Since Oct. 2013, Assistant Professor at Purdue University,
Civil Eng. Dept.
CE 597 Radar Remote Sensing
The Kowloon Collapse
AT 45J MA TAU WAI ROAD TO KWA WAN, KOWLOON - K.I.L. 8627
ON 29 JANUARY 2010
Radar Reflectivity Map in Google Earth
Not trivial to find the building on a radar image � advanced processing tools are required
Software Sarproz, by D. Perissin
3D positioning of targets after Interferometric processing
Detected Radar Targets in Google Earth
Software Sarproz, by D. Perissin
The Kowloon Collapse
This plot shows the radar return from the building which collapsed in January 2010
(strong signal before Jan, weak signal after)
Accurate location,
estimated height: 16m
This plot shows that the building started sinking at the end of June 2009 (~4mm), and had a strong acceleration
in Nov 2009 (~8mm).
Altogether, since the beginning of 2009, the total displacement before the collapse was about 20mm
Software Sarproz, by D. Perissin
Structure of the course(s)
•Introduction on Radar Remote Sensing•Electromagnetic waves, propagation, interaction with matter
•Radar principles•Radar geometric resolution
•Distributed and artificial scatterers•Synthetic Aperture Radar (SAR)
•SAR focusing•Geometric distortions
•Spaceborne, Airborne, Ground Based SAR•SAR imaging modes (Stripmap, Scansar, Spotlight)
•Geocoding of SAR images•Co-registration of SAR images
•Multi-temporal processing of SAR images•Mapping, Change detection and Classification with SAR•Applications of SAR to ocean and land remote sensing
•Introduction to SAR interferometry
CE 597 Radar Remote Sensing SAR Interferometry
•The phase of electromagnetic signals•The phase of a SAR image
•Difference in travel path between SAR acquisitions•The components of the interferometric phase
•Interferograms Flattening•DEM generation from interferometric phase
•Movement detection with interferometry•The decorrelation of the interferometric phase
•The interferometric coherence•Interferogram filtering•Interferograms stacking
•Multibaseline interferometry•Persistent Scatterers Interferometry
•SAR superresolution•Tomography
•Monitoring applications
Course Assessment
Homework + Project
Matlab simulations / data analysis
Applications in your field of study
Examples: Simulation of Radar images from LIDAR data,Correlation between optical and radar images,Positioning accuracy from radar images,SAR data over areas of interest, …
software
Ground Based SAR
Office: HAMP 4106Phone: (+1) 765-496-1267
Office hours: Monday afternoon/Wednesday afternoon
The lecturer
CE 597 Radar Remote Sensing
References
• Radar Principles, J.C. Toomay, P.J. Hannen;• Synthetic Aperture Radar Processing, G. Franceschetti, R. Lanari;• Physical Principles of Remote Sensing,W.G. Rees;• Synthetic Aperture Radar, Systems and Signal Processing Curlander McDonough;• Digital Processing of SAR, Cumming, Wong.
Slides, papers, other material
Students background
Some questions
- EM waves- Fourier Transform (and examples)- Convolution between two functions- Cross-correlation, Auto-correlation
- Matlab