GPS World, December 2011
LightSquared Can Complement GPS Javad Ashjaee JAVAD GNSS Presentation to PNT Board November 9 2011 Crowne Plaza Hotel Alexandria VA GNSS BT WiFi GSM LAN SpSp915 L band Beacon UHF PNT Communication Positioning Navigation Timing Cast of Characters 10R 1526 1536 1545 1555 156342 158742 1590 1614 1626 1636 10L 10H 10R 10R LSQ Is 20 Trillion Times Stronger 133 dB 1526 1536 1545 1555 156342 158742 1590 1614 1626 1636 10 dBm 143 or 133 dBm 10 dBm 01 mW 0000000000000002 mW Topics Root of the technical problem Technical details of our solution Four ways to prove it works Interference analysis features Technology road map DB Chart 10db 10 20db 100 30db 1000 40db 10000 50db 100000 60db 1000000 1M 70db 10000000 80db 100000000 90db 1000000000 1B 100db 10000000000 110db 100000000000 120db 1000000000000 1T 130db 10000000000000 140db 100000000000000 GPS Receivers with No Protection 1526 1536 1545 1555 156342 158742 1590 1614 1626 1636 Even small interference can hurt defenseless GPS receivers 10R Communication LSQ Power 1 10 mw 10 dBm GPS Military C A Power 1 20000000000000 mw 133 dBm GPS Encrypted P Code Power 1 200000000000000 mw 143 dBm Tests 1 Component analysis and simulation 2 Sine wave in circuit measurements 3 Anechoic chamber more than NTIA 4 The ultimate test 1 Component analysis and simulation Old Filter System
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