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SUMMARY OF RESULTS ll
CONCLUSIONS AND RECOMMENDATIONS
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3l August l978 average power impulse BER measure BER performance channel conditions channel probe coherence bandwidth delayed component digital communication system digital system diversity channels dynamic multipath error detector example experiment fade in Ch Figure A-6 Figure A-l9 Figures l0 frequency diversity frequency transfer impulse function impulse response measured impulse width distributions in-band distortion intersymbol interference l0 ns l4 ns l50 MHz LP terminal magnetic tape meteorological microwave link Mugu multipath component nondiversity noted null observed outage path period phase interference fading phase-lock loop PMTC PN clock rate PN code power impulse response Power impulse width probability density functions probe receiver PST PN Clock rate of 50 Refractive index profile relative phase resolution RSL record Section seen selective fading September l978 Severe Duct shown in Figure signal passband SNI-LP link space diversity Strip chart record Subref sunrise period tilted antenna Time-lapse photographs transfer function U.S. DEPARTMENT