(See also Serial search PN acquisition) Index Single point constellation, 740, 741 Stored reference SS systems, historical Single-sided noise spectral density, 671 examples (see AN/ARC-50; BLADES; Singleton, H. E., 48 CODORAC; F9C-A radioteletype SJR (signal-to-jammer power ratio), 696, system; Hush-Up) 1190-1192 Stored reference (SR) systems, 11 Skywave, 447 Sturgeon, T., 41, 51 Slattery, J., 109 Super channel, 237-238, 246, 565, 567, 591 Slepian, D., 1144 interleaving, 235 Sliding correlator PN acquisition scheme, Surface acoustic wave (SAW) device, 818, 1083, 1106, 1115 Sussman, S. M., 114, 116 Slip time, 904 Swanson, L., 665 mean time to loss-of-lock for DLL and SWI (synch-worthiness indicator), 761 TDL, 933-935 Switched (Dicke) receiver, 1075 Slotted ALOHA random access scheme, Switched (independent) modulation, 13 Symbol energy-to-jammer noise ratio, 192, Slow frequency hopping (SFH), 466, 499, 670, 715, 964 Sync prefix, 985 SLS (search-lock strategies), 755, 765, 885, Sync-worthiness indicator (SWI), 761 Synchronization acquisition and tracking, Smith, J. G., 110 historical notes, 73-75, 81, 92, 101 Smith, R. A., 76 Synchronization requirements, 16-17, 1163 Smith, W., 90 Synchronous code division multiple access Soft decision, 160-166, 169, 183, 190, 198, (see S-CDMA) 200-205, 214, 216, 247, 1113, 1125 Synchronous coherent energy detector, energy detection metric, 499-500, 547 1033, 1038-1040 Viterbi decoding, 550 Synchronous control system (SCS), 933 Space Ground Link Subsystem (SGLS), 106 Synchronous non-coherent energy detector, Space Shuttle orbiter system, 765, 898 Space Shuttle program, 892 Speech scrambling, 49-55 Tapped delay line, 822, 823 Sperry, E. A., 64 Tau-dither loop (TDL): Spilker, J.J., Jr., 117 acquisition performance, 928-933 Spot beam 1109 mean time to loss-of-lock, 933-935 Spread Eagle, 120 tracking performance, 914-928 Tau-dither tracking, historical example, Spread-spectrum (SS): 73-75 bandwidth, 1036 TDD (time division duplexing), 1186, 1188, first use of term, 72 1192-1194, 1210 Sp