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Radar System Engineering

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746 RADAR SYSTEM ENGINEERING<br />

Relaying, of sine and cosine, general<br />

methods of, 701–71 1<br />

Repeater, electromechanical, 49W-492<br />

syncbro-driven, 490<br />

Resistance, back, of crystal, 413<br />

spreading, of crystal, 413<br />

Resolution of PPI display (see PPI displays,<br />

resolution of)<br />

Resolvers, 487<br />

Resonance charging, 382<br />

Resonant cavities (see Cavities, resonant)<br />

Responder beacons, 246<br />

R-f components, 391-432<br />

R-f head, 419432<br />

examples of, 425-432<br />

heat removal from, 421<br />

test points in, 424<br />

&f switch, 295<br />

R-f unit, 420<br />

Eleke, F. F., 353<br />

Rieke diagram, 339<br />

Rising sun magnetron (see Magnetron,<br />

rieiig sun)<br />

Roberts, S., 662, 678<br />

Robertson, L. M., 561<br />

Robertson, R. M., 291, 295<br />

Robinson, C. V., 298<br />

Rotary joint, for coaxial line (see Line,<br />

coaxial, rotary joint for)<br />

for waveguide (see Waveguide rotary<br />

joint)<br />

Rotary spark gap, 381<br />

R-scope, 165<br />

Rubenstein, P. J., 64<br />

Ryde, D., 62<br />

Ryde, J. W., 62<br />

Sawtooth generators, 51&514<br />

Scale factor, 162<br />

Scale markers, 163<br />

Scale-of-two, 497, 499<br />

Scan, complex, 281<br />

circular, 281<br />

conical, 188, 205, 281<br />

helical, 281<br />

horizon, 281<br />

Palmer, 282<br />

sector, 199, 281<br />

simple, 280<br />

s<br />

Scan, spiral, 281<br />

Scanner, 271<br />

airborne, installation of, 312<br />

electrical, 29 1–304<br />

of long-range ground radar, 287<br />

mechanical, 282-291<br />

stabilization of (see Stabilization; Stabilizer)<br />

surface-based, installation of, 313<br />

weight of, 283<br />

Scanning, conical (see Conical scan)<br />

signal fluctuations due to, 644646<br />

Scanning loss, 43<br />

scanning modulation (see Modulation,<br />

from scanning)<br />

seaming patterns, radar, 280-282<br />

scanning rate, 116-121<br />

azimuth, choice of, 599<br />

Schwarzschild antenna, 295-298<br />

SCI height finder, 29~302<br />

SCR-268, 203<br />

SCR-270, 181<br />

SCR-271, 181<br />

SCR-521, 196<br />

SCFL527, 186<br />

SCR-540, 201<br />

SCR-534, 207-210<br />

close controI with, 238<br />

scanner, 284-286<br />

SCR-588, 186<br />

SCR-615, 188<br />

SCR627, 186<br />

SCR702, 202<br />

SCR-717, 199<br />

SCR-720, 201<br />

screens, cathode-ray tube (see Cathoderay<br />

tube screens)<br />

sea return, 92-96<br />

Second-time-around echo, 117<br />

Sector control, 230<br />

Sector display (see Display, sector)<br />

Sector scan (see Scan, sector)<br />

Self-synchronous system, 438<br />

Selsyns, 487<br />

sensitivity-time-control circuit, .460<br />

Sequencing circuits, 710<br />

Series gap switch, 377<br />

&?ries peakhg (see Peaking, series)<br />

servomechanisms, 49 I<br />

Shunt peaking (see Peakiag, shunt)<br />

Side lobes, 272

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