Gracheva, Valeria: Multichannel analysis of medium grazing angle sea clutter for airborne microwave radar systemsMehrkanalige Analyse von Seeclutter für fluggetragene Radarsysteme im Mikrowellenbereich mit mittlerem Streifwinkel. 2015
Inhalt
- Kurzfassung
- Abstract
- Contents
- 1. Introduction and Overview
- 2. Radar Fundamentals
- 3. Sea Clutter
- 3.1 Water Waves
- 3.2 Scattering from Sea Surface
- 3.3 Doppler Frequency of Sea Scatterers
- 3.4 Scattering from Breaking Waves
- 4. Experiments with PAMIR
- 5.Theoretical Multichannel Analysis of Sea Clutter
- 5.1 Doppler Frequency
- 5.2 Cross-Covariance Matrix and Spectral Density Matrix
- 5.3 Space-Time Filter
- 5.4 Channel Correlation
- 5.5 Impact of Fast Scatterers
- 6. Multichannel Properties of Real and Simulated Data
- 6.1 Simulation Model
- 6.2 Estimation of Radial Sea Scatterer Velocity Variance
- 6.3 Comparison of Real and Simulated Data
- 6.4 Radial Sea Scatterer Velocity Variance of Real Data
- 6.5 Channel Correlation of Real Data
- 6.6 Real and Simulated Data with Fast Scatterers
- 7. Experiments with a Small Cooperative Boat
- 7.1 Experiments
- 7.2 Target Position in acquired Data
- 7.3 SCNR before and after Clutter Suppression
- 7.4 Detection Performance
- 8. Conclusion and Outlook
- List of Abbrevations
- List of Symbols
- Appendix
- A. Boundary Conditions to Calculate Flow Velocity of Water Waves
- B. Calculation of Scattering from Sea Surface
- C. Change of Basis and Eigenvalues of the Clutter Spectral Density Matrix
- D. Approximation of the Spectral Density Matrix with three Taylor terms
- E. Perturbation Method for Eigenvalue Problems
- Bibliography