820 



scanning system, (Coni.) 



and, 343-344; pulling characteristics 



of, 405 

 scanning time, optimum, 159-160; total, 



294 

 scan-to-scan correction, 88 

 scattering, 174 



scattering coefficients, 747; see also back- 

 scattering 

 Schade, O. H., 786 n. 

 Schetne, H. A., 533 n. 

 Schlesinger, S. P., 216 n. 

 Schwarz's inequality, 274-275, 282-284 

 Schweibert, H., 546 n. 

 scientific research, radar systems and, 16 

 scintillation, 199; see also target noise 

 sea clutter, 35, 211, 220, 222; see also sea 



return 

 search and detection, 4 

 search display, 651-654 

 search loop mechanization, 448-452 

 search pattern elevation, 114 

 search pattern stabilization, 116, 440- 



441 

 search pattern velocity errors, 444-447 

 search stabilization system, 430-432 

 search volume requirements, 113-115 

 sea return, 92, 181-190, 211-219, 725-802 

 sea surface, radar area and, 211 

 sea water, dielectric properties of, 183 

 second-time-around echoes, 221 

 seeker frequency, 135 

 semiactive system, 13-14, 135, 318, 340; 



defined, 293 

 semiconductor diodes, 512 

 self-contained navigation, 727 

 sensitivity measurements, 392-393 

 sensitivity parameters, infrared sensing 



system, 792 

 sensitivity time control (STC), 790 

 servo noise, 396 

 servo systems, 502-505 

 sferics, 395; see also atmosphere 

 shadow-mask colot tube, 661-662 

 shielding, nuclear radiation and, 693-694 

 ship-based radar system, 3 

 ship weapons system, 50 

 shock, vibration and, 694-704 

 shock isolators, 703-704, 708 

 short-pulse radar system, 335-336 

 shot noise, 246, 353, 360 

 sidebands, 17-19 



INDEX 



sidelobes, antenna, 323, 521 



side-look system, radar mapping, 9-10, 

 773 



Silver, Samuel, 516 n. 



sigma zero, 140 



signal, high and low-frequency, 285-286; 

 minimum discernible, 768; time of 

 arrival of, 281-291 



signal analysis, techniques for, 238-291 



signal correction, 376 



signal display integration, 631-633 



signal fading, 461, 476-477 



signal "folding," 323-324, 327 



signal location error, 282, 284 



signal power, 139, 260 



signal-to-clutter ratio, 271, 325, 333 



signal-to-noise ratio, 260, 265, 269, 274- 

 276, 288, 290, 318, 329, 346; detection 

 and data processing and, 297, 300; in 

 display system design, 621; doppler 

 navigation systems and, 750; loss in, 

 165; maximum, 276-277; predetection 

 of, 168, 310; in pulsed-doppler sys- 

 tems, 325; receiver design and, 350- 

 351; resolution of, 172; see also noise 



Simmons, A. J., 554 n., 555 n., 566 n. 



single-glimpse probability, 144, 149-151, 

 157, 162-163 



slot hybrid duplexer, 568 



slot hybrid mixers, 552-553 



slot hybrid phase shifter, 556 



slotted waveguide, 524-528 



smoke, 10 



smoothing schemes, 99-100, 329 



Smullin, L. D., 567 n. 



S-N diagram, 701; see also signal-to- 

 noise ratio 



sneak circuits, 377-380 



snow, attenuation by, 231 



snubbing, acceleration and, 707-708 



solar radiation, mechanical design and, 

 692; temperature and, 685 



solid state amplifiers, 574-578 



sound pressure level, 705-706 



spaced-active operation, 318 



space modulation, 17 



space stabilization systems, 395, 439, 

 452-453; cross coupling from, 494 



sparking, in magnetrons, 587 



spectral response, 790, 792, 798 



spectrum, in Fourier series, 239 



spot brightness, 630 



