18,181 to 18,183 of 18,183 Results
Jan 1, 1992
Hechler, F.; Folkner, W. M., 1992, "Mission Analysis for Laser Interferometer Space Antenna (LISA)", https://hdl.handle.net/2014/26393, UNKNOWN, JPL Open Repository
The interplanetary orbits of three pairs of spaceprobes carrying laser interferometer antennae are designed such that their miutual distances, i.e., the lengths of the interferometer arms remain nearly constant. The pairs move relative to each other in an equilateral triangle. |
Jan 1, 1992
Cheng, Unjeng; Levitt, Barry; Polydoros, Andreas; Simon, Marvin K., 1992, "Optimum Detection of Frequency-Hopped Signals", https://hdl.handle.net/2014/36703, IEEE Transactions on Communications, JPL Open Repository
This paper derives and analyzes optimum and near-optimum structures for detecting frequency-hopped (FH) signals with arbitrary modulation in additive white Gaussian noise. The principalmodulation formats considered are M-ary frequency-shift-keying (MFSK) with fast frequency hoppi... |
Sep 1, 1989
Larson, S. M.; Edberg, S. J.; Levy, D. H., 1989, "The Modern Role of Visual Observations of Comets", https://hdl.handle.net/2014/35031, USA, JPL Open Repository
This paper reviews the role of past and future visual observations in cometary research. The Strengths and limitations of visual observations are explored for the benefit of both investigators who might have to use them and observers who wish to make real contributions to the fie... |