818 



radar, {Cont.) 



way transmission characteristic of, 15 



radar area or cross section, 176, 180 



radar beacon system, 11-12 



radar beamwidth, see beamwidth 



"radar buster," 13 



radar cross sections, 209-210 



radar designer, first task of, 27 



radar detection probability distribution, 

 75 



radar echo, 174-175, 180; see also echo; 

 radar waves, reflection of 



radar equation, 175 



radar field, 178 



radar frequency components, see RF 

 components 



radar information, 609; see also display 

 system 



radar length, 176 



radar mapping, see ground mapping 



radar pictures, 10 



radar range, idealized, 141; problem of, 

 749-752 



radar range equation, 138-141; ground 

 mapping and, 782-784; weather prob- 

 lem and, 764-766 



radar range tracking, see range tracking; 

 tracking 



radar receiver, 347-393; amplifier gain, 

 373-374; angle demodulation in, 389- 

 390; automatic gain control and, 379- 

 380; bandwidth and dynamic response 

 in, 375-377; characteristics of, 350- 

 351; envelope detector in, 382-385; 

 gain variation and gain setting in, 

 375; gating circuits in, 386-387; 

 general design principles, 347-352; 

 generic and product-building blocks 

 in, 23; ground mapping with, 781; at 

 high-input power levels, 380-381; in- 

 terdependence of components in, 352- 

 353; measurement problems in, 390- 

 392; mixer in, 550-553; noise and 

 sensitivity measurements in, 390-393; 

 pulse stretching circuits in, 387-388; 

 receiver noise figure of, 353-355; 

 regulating and tracking circuits in, 

 388-389; RF components of, 511-512; 

 signal modulation in, 16-25 



radar systems, airborne design problems 

 and, 27-30; basic principles of, 293- 

 300; classifications of, 2-3; communi- 



INDEX 



radar systems, {Cont.) 



cations and, 12-13; complexity of, 34; 

 coverage of, 4; detection performance 

 by, 272; decision element in, 144; dis- 

 play system design and, 619-621; 

 environments of, 35-36; extraction of 

 target information from, 23; func- 

 tional characteristics of, 3-16; generic 

 types and techniques of, 292-346; 

 high-resolution, 333-338; identifica- 

 tion friend or foe (IFF), 4; illumina- 

 tion and, 13-15; information matrix 

 in, 294; information relay and, 15; 

 installation environment, 2-3; jam- 

 ming and, 15-16; mapping by, 9-11 

 {see also ground mapping); modula- 

 tion of, 16-25; multimode operation, 

 3; navigation and, 11-12 {see also 

 doppler navigation systems); noise 

 inputs to, 395-401; operating carrier 

 frequency of, 16-11 ; passive vs. active, 

 13; primary and secondary modes, 

 3-4; pulsed-doppler, 320-333; radia- 

 tion detection by, 13; reliability of, 34 

 {see also reliability); scientific re- 

 search and, 16; search and detection 

 by, 4; subcarriers and, 20-21 ; tracking 

 by, 6-9 {see also tracking); types of, 

 293 



radar waves, reflection of, 181-190 



radiation, heat transfer through, 687; 

 nuclear, 692-694; solar, 692 



radiation detection, 13 



radio frequency (RF), 4, 26; see also 

 RF (adj.) 



radio hole, 236 



radiometers, mapping, 173 



radio waves, propagation of, 174; reflec- 

 tion and transmission of, 174-237; 

 scattering of, 174 



radomes, 531-535 



rainfall, attenuation through, 230-231, 

 761-762; see also precipitation 



random error, 124-125; angle tracking 

 loop position and, 489-490 



random motion, 696 



random noise, 245-248, 273, 316; see 

 also noise 



random tracking errors, 480 



random vibration, 699-700 



range aperture, 80 



range gating, 163, 325-327, 332, 499-501 



