Electronic Navigation Systems 3E Episode 6 doc

... (DGPS) 16 2 5.9 GPS antenna systems 16 5 5 .10 GPS receiver designation 16 6 5 .11 Generic GPS receiver architecture 16 8 5 .12 GPS user equipment 17 1 5 .13 GPS on the web 18 2 5 .14 Global Orbiting Navigation ... velocity 4 1. 5 Radio frequency spectrum 5 1. 6 Radio frequency bands 6 1. 7 Radio wave propagation 8 1. 8 Signal fading 13 1. 9 Basic antenna theory 14 1. 10 Glo...

Ngày tải lên: 13/08/2014, 16:21

... again constricts (l–␦l). The frequency Figure 2. 6 Construction details of a ceramic electrostrictive transducer. 24 Electronic Navigation Systems 2. 2 .2 Salinity, pressure and the velocity of the ... 2. 2 Echo sounder range vs pulse length vs PRF Depth (metres) Pulse length (ms) PRF (pulses per minute) 5, 10 and 20 0 .25 750 40 0.38 375 100 1.00 150 20 0 2. 00 75 400 and 800...

Ngày tải lên: 13/08/2014, 16:21

... external navigation equipment and reads input from the master display. Figure 3. 29 System control flow chart. (Reproduced courtesy of Litton Marine Systems. ) 66 Electronic Navigation Systems 3. 6.1 ... design. Figure 3. 7 Effect of moving a conductor through a magnetic field. Figure 3. 8 Relationship between the vessel’s speed and the output from the sensors. 78 Electronic...

Ngày tải lên: 13/08/2014, 16:21

... 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 25 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2.5 20 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 15 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 ... 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 50 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 2 .4 45 2 .4 2 .4...

Ngày tải lên: 13/08/2014, 16:21

... 46°48Ј27.3 05 N67 55 Ј37. 159 ЉW 800 X Nantucket 41° 15 12.046ЉN69 58 Ј38 .53 6ЉW 13131.88 11000 350 Y Cape Race 46°46Ј32.286ЉN53°10Ј27.606ЉW 28 755 .02 250 00 1000 Z Fox Harbour 52 °22Ј 35. 252 ЉN 55 42Ј27.862ЉW 4 159 4 .59 ... 57 °09Ј12. 350 ЉN 170° 15 06.2 45 W 3 25 X Attu 52 °49Ј44.134ЉN 173°10Ј49 .52 8ЉE 148 75. 25 11000 6 25 Y Port Clarence 65 14Ј40.372ЉN 166 53 Ј11.996ЉW 32068....

Ngày tải lên: 13/08/2014, 16:21

... to acquire quickly. Figure 5.8 Navigation data format. 164 Electronic Navigation Systems Figure 5.20 DGPS coverage of the UK coastline. 150 Electronic Navigation Systems The P (Precise) code, ... Guard.) 1 46 Electronic Navigation Systems where V = orbital velocity in kms –1 , a = altitude of the satellite above the earth’s surface in km, r = the mean radius of the ear...

Ngày tải lên: 13/08/2014, 16:21

... no. L1 carrier (MHz) L2 carrier (MHz) 7 1598.0625 1242.9 375 –6 1598.6250 1243. 375 0 –5 1599.1 875 1243.8125 –4 1599 .75 00 1244.2500 ↓ +13 1609.3125 1251.6 875 Expression for channel increment: L1 ... 1 575 .420 MHz 1598.6250–1609.3125 MHz L2: 12 27. 600 MHz 1242.9 375 –1251.6 875 MHz Code clock rate C/A: 1.023 Mbit s –1 0.511 Mbit s –1 P: 10.23 Mbit s –1 5.11 Mbit s –1 Time reference U...

Ngày tải lên: 13/08/2014, 16:21

... minute. 214 Electronic Navigation Systems Figure 6.9 Examples of VMS-VT conning information display screens. (Reproduced courtesy of Litton Marine Systems. ) 200 Electronic Navigation Systems 6 ... installed, operates satisfactorily. 2 18 Electronic Navigation Systems by the customer. Reference to Chapter 7 will show that an ECDIS must use an electronic navigational c...

Ngày tải lên: 13/08/2014, 16:21

... started raster scanning in 199 1 and evaluated a prototype of the scheme in 199 2. NOAA began converting its charts to raster format in 199 3 and completed the task in 199 4. The United Kingdom Hydrographic ... started the raster scanning of its Admiralty charts in 199 4 and shipboard trials of ARCS began in 199 5; the service becoming commercial in 199 6. Other nations have also developed th...

Ngày tải lên: 13/08/2014, 16:21

... Brown Ltd.) 276 Electronic Navigation Systems Figure 8 .10 Behaviour of the gravity-controlled gyro (damped). (Reproduced courtesy of S.G. Brown Ltd.) 270 Electronic Navigation Systems complete ... the Navmaster Electronic Navigation System of PC Maritime. 7 .10 Revision questions 1 What do you understand by the term electronic chart’? What is the definition of an ‘offici...

Ngày tải lên: 13/08/2014, 16:21

... Mk 37 VT digital gyrocompass equipment. (Reproduced courtesy of Litton Marine Systems. ) 312 Electronic Navigation Systems the turns of coil B will be effectively zero. This state can only exist ... the ac/dc power supply assembly relay is bad Replace ac/dc power supply assembly 304 Electronic Navigation Systems Initially the bob will centre in the middle of the ‘E’ core, but i...

Ngày tải lên: 13/08/2014, 16:21

... of parameters. Figure 9.15 Display unit. (Reproduced courtesy Litton Marine Systems. ) 344 Electronic Navigation Systems 9.9 Glossary Adaptive autopilot One in which all the control signals ... omnidirectional antenna system. 342 Electronic Navigation Systems Table 9.3 Sperry ADG 3000 VT fault codes and corrective action chart. (Reproduced courtesy of Litton Marine Systems)...

Ngày tải lên: 13/08/2014, 16:21

... 376 Electronic Navigation Systems Figure 11.4 Basic concept of the COSPAS/SARSAT alerting system. (Reproduced courtesy of the IMO.) 368 Electronic Navigation Systems 10.8 Summary ᭹ RDF systems ... 378 Electronic Navigation Systems Figure 11.6 Footprint coverage of the earth’s surface from Inmarsat-3 four geostationary satellites. (Reproduced courtesy of Inmarsat.) 360 E...

Ngày tải lên: 13/08/2014, 16:21

... Rogaland 0148 0548 0948 1348 1748 2148 T Oostende 0248 0648 1048 144 8 1848 2248 R Reykjavik 0318 0718 1118 1518 1918 2318 J Stockholm 0330 0730 1130 1530 1930 2330 P Scheveningen 0348 0748 1148 1548 ... system. 404 Electronic Navigation Systems Digital Information in discrete or quantized form, i.e. not continuous as in the case of an analogue signal. DAC Digital-to-analogue convert...

Ngày tải lên: 13/08/2014, 16:21

... carrier frequency, 150 navigation data message, 150 , 151 P-code, 149 position fix, 154 pseudo-random noise code (PRN), 149, 168 pseudo range measurement, 156 satellite pass predictions, 157 signal parameters, ... 46 pulsed system, 71 SPS, 154 Standing wave ratio (SWR), 17 Starting a gyrocompass, 306 Stepper systems, 307 Surface radio wave, 8 Synchro systems, 309 410 Elect...

Ngày tải lên: 13/08/2014, 16:21