LIST OF FIGURES (Continued) 



Figure 



No ■ Page 



IV -6 Dacca Lattice of the English Chain 52 



IV -7 Error Contours for Decca Navigator 55 



IV -8 Loran-A Coverage, July 1964 59 



IV -9 Loran -A Grid System 62 



IV -10 Time Relationship Between Pulses Transmitted by Master 



and Salve Stations in an Actual Loran Station Pair 63 



IV -11 Loran -C Coverage, July 1964 69 



IV-12 Loran -C East Coast Chain 71 



IV-13 Schematic of Transit System Operation 88 



IV -14 The Secor Satellite Navigation System 93 



IV -15 Janus JN-400 Acoustic Doppler Operation 100 



V-1 Diagram of Typical Two -Range Decca Hydrographic 



Survey System 106 



V-2 Phase Correction vs Range for Typical Seawater Trans- 

 mission Path 108 



V-3 Fixing Accuracy Contours for Summer Daylight Operation 



for a 0.01 Lane Deviation 108 



V-4 Block Diagram for EPI System ' 111 



V-5 Basic Lorac System Required for One Hyperbolic Line 



of Position 119 



V-6 Hyperbolic Position Grid 119 



artbxtr 31.HittIr.Ilnr. 



