Target characterization in 3D using infrared lidar

We report examples of the use of a scanning tunable CO2 laser lidar system in the 9-11 micrometers region to construct images of vegetation and rocks at ranges of up to 5 km from the instrument. Range information is combined with horizontal and vertical distances to yield an image with three spatial dimensions simultaneous with the classification of target type. Object classification is made possible by the distinct spectral signatures of both natural and man-made objects. Several multivariate statistical methods are used to illustrate the degree of discrimination possible among the natural variability of objects in both spectral shape and amplitude.

[1]  D. Haner,et al.  Target reflectance measurements for calibration of lidar atmospheric backscatter data. , 1983, Applied optics.

[2]  John A. Richards,et al.  Remote Sensing Digital Image Analysis , 1986 .

[3]  T Shimada,et al.  High-speed random access laser tuning. , 1999, Applied optics.

[4]  Thomas Cudahy,et al.  Mapping surface mineralogy and scattering behavior using backscattered reflectance from a hyperspectral midinfrared airborne CO 2 laser system (MIRACO2LAS) , 1999, IEEE Trans. Geosci. Remote. Sens..

[5]  N Menyuk,et al.  Limitations of signal averaging due to temporal correlation in laser remote-sensing measurements. , 1982, Applied optics.

[6]  M J Schmitt,et al.  Effect of speckle on lidar pulse-pair ratio statistics. , 1997, Applied optics.

[7]  P V Cvijin,et al.  Reflectance spectra of terrestrial surface materials at CO2 laser wavelengths: effects on DIAL and geological remote sensing. , 1987, Applied optics.

[8]  J. Goodman.  Statistical Properties of Laser Speckle Patterns , 1963 .

[9]  V Srivastava,et al.  Comparison of Continuous-Wave CO(2) Lidar Calibration by Use of Earth-Surface Targets in Laboratory and Airborne Measurements. , 1998, Applied optics.

[10]  Richard O. Duda,et al.  Pattern classification and scene analysis , 1974, A Wiley-Interscience publication.

[11]  R.M. Narayanan,et al.  Field measurements of natural and artificial targets using a mid-infrared laser reflectance sensor , 1994, IEEE Photonics Technology Letters.

[12]  James Theiler,et al.  Clustering to improve matched filter detection of weak gas plumes in hyperspectral thermal imagery , 2001, IEEE Trans. Geosci. Remote. Sens..

[13]  U. Persson,et al.  Differential reflectance of natural and man-made materials at CO(2) laser wavelengths. , 1982, Applied optics.

[14]  A. C. Rencher.  Methods of multivariate analysis , 1995 .