Maximum angular accuracy of pulsed laser radar in photocounting limit.

To estimate the angular position of targets with pulsed laser radars, their images may be sensed with a fourquadrant noncoherent detector and the image photocounting distribution processed to obtain the angular estimates. The limits imposed on the accuracy of angular estimation by signal and background radiation shot noise, dark current noise, and target cross-section fluctuations are calculated. Maximum likelihood estimates of angular positions are derived for optically rough and specular targets and their performances compared with theoretical lower bounds.

[1]  P Diament,et al.  SNR in photocounting images of rough objects in partially coherent light. , 1976, Applied optics.

[2]  Carl W. Helstrom,et al.  Optimum Detection of an Optical Image on a Photoelectric Surface , 1973, IEEE Transactions on Aerospace and Electronic Systems.

[3]  Changhwi Chi,et al.  Optical components and technology in laser space communications systems , 1970 .

[4]  J. Goodman.  Some effects of target-induced scintillation on optical radar performance , 1965 .

[5]  M. Elbaum,et al.  A wavelength diversity technique for reduction of speckle size , 1972 .

[6]  B E Saleh.  Estimation of the location of an optical object with photodetectors limited by quantum noise. , 1974, Applied optics.

[7]  T Flom.  Spaceborne laser radar. , 1972, Applied optics.

[8]  M. C. Teich,et al.  Chapter 9 Coherent Detection in the Infrared , 1970 .

[9]  C. Helstrom.  Linear Restoration of Incoherently Radiating Objects , 1972 .

[10]  The Effects of Automatic Gain Control Performance on the Tracking Accuracy of Monopulse Radar Systems , 1959, Proceedings of the IRE.

[11]  J. H. Dunn,et al.  Phenomena of Scintillation Noise in Radar-Tracking Systems , 1959, Proceedings of the IRE.

[12]  L. Mandel.  Fluctuations of Photon Beams: The Distribution of the Photo-Electrons , 1959 .

[13]  L. Mandel,et al.  Concept of Cross-Spectral Purity in Coherence Theory , 1961 .

[14]  F. Davidson,et al.  Detection of weak optical images with photon counting techniques. , 1972, Applied optics.