• Blackman, S., and R. Popoli (1999), Design and Analysis of Modern Tracking Systems, Artech House, Norwood, Mass.
  • Croft, T. A. (1967), Computation of HF ground backscatter amplitude, Radio Sci., 2(7), 739746.
  • Fridman, S. V. (1998), Reconstruction of a three-dimensional ionosphere from backscatter and vertical ionograms measured by over-the-horizon radar, Radio Sci., 33(4), 11591171.
  • Fridman, S. V., and L. J. Nickisch (1999), Generalization of ionospheric tomography on diverse data sources: Reconstruction of three-dimensional ionosphere from simultaneous vertical ionograms, backscatter ionograms and TEC data, in 1999 Ionospheric Effects Symposium, edited by J. M. Goodman, pp. 6677, Off. of Nav. Res., Arlington, Va. (Available as PB2000-108001 from
  • Kalman, R. E. (1960), A new approach to linear filtering and prediction problems, Trans. ASME Ser. D, 82, 3545.
  • Nickisch, L. J., S. V. Fridman, and M. A. Hausman (1998), Automated propagation management and assessment for over-the-horizon radar: Final technical report, Tech. Rep. MRC/MRY-R-070, Air Force Res. Lab., Hanscom Air Force Base, Mass., Aug.
  • Tikhonov, A. N., and V. Y. Arsenin (1977), Solution of Ill-Posed Problems, Halsted, New York.