A predetection polarization diversity combiner
Chase P. Hearn, United States. National Aeronautics and Space Administration, Langley Research Center
National Aeronautics and Space Administration, 1970 - Science - 28 pages
4 pages matching carrier tracking loops in this book
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9 MHz amplitude weighting APPENDIX Automatic Gain Control bandwidths as large carrier level carrier tracking loops carrier tracking servomechanism combined signal composite phase error degradation differential phase error Doppler shift dynamic range eh(s equal input signals Equal-Amplitude Input Signals ev(s experimental polarization diversity factor flight trajectory frequency and dynamic gain amplifier gain and phase gain control gain weighting horizontal channel Hybrid junction individual SNR values Input Signal Amplitude input signal level input SNR values intermediate frequency Langley Research Center large as 9 loop filter loop gain loop threshold MAXIMAL RATIO COMBINATION maximum message function multiloop carrier tracking Noise figure NONIDEAL MAXIMAL RATIO operation optimum oscillator pair of orthogonally phase angle phase equivalent circuit phase lock loop Phase Match polarization diversity combiner Predetection combination primary loop primary phase lock S-band secondary loops SNR enhancement SNR)LT sound-noise ratio spacecraft transfer function uncorrelated vertical and horizontal vertical channel