GPS World, January 2012
System Design Test INNOVATION Frequency Modulation Periods and Ranges TABLE 1 Group number Jammer number L1 bandwidth MHz L2 bandwidth MHz Non GPS frequencies 2 20 50 2 20 50 Power in band mW Power in band mW Yes No 1 1 17 95 22 No 2 01 07 18 No 3 58 20 20 No 4 70 23 23 No 2 5 15 58 58 No 6 63 40 77 Yes 7 150 520 520 Yes 8 87 334 334 Yes 9 159 499 499 Yes 10 12 65 19 27 146 351 No 11 244 642 642 221 482 482 No 12 000 58 109 No 13 000 43 107 No 14 18 42 42 Yes 3 15 118 476 495 060 544 770 Yes 16 001 004 007 004 020 026 Yes 17 000 146 344 000 037 774 Yes 18 139 461 469 061 466 564 Yes TABLE 2 Jammer power levels in frequency bands of interest Group number Jammer number Tracking dB Acquisition dB 1 1 82 92 2 10 82 88 11 108 111 13 77 89 TABLE 3 Jammer attenuation levels needed to allow COTS GPS receiver acquisition and tracking Group number Jammer number Tracking m Acquisition m 1 1 308 973 2 10 308 614 11 6140 8670 13 173 689 TABLE 4 Ranges of jammer effectiveness against COTS GPS receiver when using lossless isotropic antennas In 20 years Ill be dead Real quote CEO wondering when Galileo will actually help his bottom line NO WAITING LOCATA IS HERE NOW www locatacorp com YOUR OWN GPS The Local Constellation is launched ION 2011 The trademarks Locata GPS 20 Your Own GPS and Local Constellation are registered to Locata Corporation www gpsworld com January 2012 GPS World 67
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