Objectives
OBJECTIVES :
- To gather national teams of statistical signal processing in fields linked to RADAR and Image (this is the continuation of Club STAP),
- explore some scientific breaktroughs and maintain the innovative effort on some thematics for the french defense.
CONTEXTS :
- Data systems in RADAR and Imagery more and more complex: number of transmitters and/or receivers, multiple diversity (Doppler, Polarisation, Interferometry, temporal axis, spatial structure, transmitted waveforms)
- Complex background : Heterogeneous clutter, non gaussian, non-stationnary, corrupted learning data, etc.
APPLICATIONS :
- Radar: surveillance, STAP-GMTI, MIMO (detection of targets with low SER and small speed in a non gaussian and heterogeneous context), mono and multi-look SAR (target detections in SAR, change detection, surveillance of structure) et Goniometry
- Hyperspectral: detection of outlier, targets and change
- GPR: detection in complex environments, FOPEN
- Astronomy: radio-interferometry, calibration of sensors
TECHNICAL ISSUES:
- Large data size: statistical parameters learning
- Theoretical performance: false alarms regulation, …
- Uncertainty on the useful signal: trade-off between hyper-parametrization and estimation accuracy
This project is decomposed in four Works Packages:
- WP1: Robust estimation for large data size
- Robust estimation of structured covariance matrix
- Conjoint estimation of parametrized mean and covariance matrix
- Implementation of robust algorithms by means of riemannian geometry
- WP2: Integration of uncertainties on the signal model
- Bayesian subspace methods for estimation and detection
- Advanced calibration for multi-sensors systems and study of the impact of the model error on the detection/estimation performance
- WP3: Theoretical performance study
- Caracterisation of optimal performance by taking into account of constraints on the physical parameters in non gaussian environnement
- Theoretical performances of estimators
- Performance analysis of filterting or detection processes in a large dimension regime
- WP4: Applications
- RADAR
- SAR and hyperspectral images
- Other applications: GPR, astronomy