Radar System Engineering

SEC. 17.5] THE METHOD OF INCREMENTAL ANGLE 693
PointX Fig.(17.3)
I 1
Pulse Cathode Band
stretcher follower pass
V,h finer b ‘otor ‘--e
H~ ‘+--2-
Afterfilter ~.;
~ ‘—’’’—’”
FICA17.5b.—Jittered-pulse system, receiving station.
expressed by a sinusoidal variation in the relative timing of a pair of
pulses appearing in each pulse cycle. A method for accomplishing this is
illustrated in Fig. 17.5. The basic pulse is initiated by an external trigger
and coded by the circuit of Fig. 17”2. The third pulse, originating in V2.
of that figure (repeated in Fig. 17”5a), initiates the action of a time-delay
circuit consisting of a sawtooth generator V%, a biased diode V&, an
amplifier V*, and a blocking oscillator V4b. The need for a square-wave