A Crosscorrelator for an Ionospheric Sounder at 30 Megacycles |
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100-kilocycle signal 100-kilocycle timing signal 20 VOLTS 35 decibels 500 microseconds adjust amplitude Antenna approximately capacitor cathode follower cathode potentiometers chassis Continuous Phase Shifter Crosscorrelator Output Records D.C. Amplifier delayed pulse DIVIDER AND PULSE division ratio duty cycle ESTERLINE-ANGUS F₁(t Frequency Divider Gated Amplifier Output goniometer grid Hewlett-Packard Improvement in Decibels INPUT PULSE input signal ionospheric JOOK left section LIST OF ILLUSTRATIONS megacycles Multiplier Multivibrator Cathode Waveform Noise Adding Circuit NOISE INPUT noise level noise voltage NON-SHORTING SELECTOR output pulse pentode Phase Coherent System power density power supply Pulse Generator 18 pulse length pulse repetition frequencies Pulse Shaper pulse train R-C Integrator Radio repetition rate resistor search coil Shifter Circuit Diagram shown in Figure Signal and Noise signal attenuation signal pulse Signal-to-Noise Improvement Signal-to-Noise Ratios sine wave Skaneateles suppressor sweep synchronizing pulse Test Signal Waveform thermocouple transmitter tube vertical incidence voltage voltmeter volts RMS Ιμί οιμε οιμί