Airborne GPS guidance system for defeating multiple jammers

摘要: A missile guidance system designed to operate on GPS signals in an anti-jamming environment. The inventive includes first, second and third airborne vehicles (20). receiver (24) is mounted each of the three (20) receive transmitted from spaceborne satellites (14). Each vehicle acts as a pseudo-satellite or 'pseudolite'. received are processed by processor (26) provide first intermediate signal indicating position This retransmitted missile. output thereof. pseudolites would be vicinity target area. Because relatively close targets compared satellite high altitude orbit because able transmit kilowatt more power, strength may improved significantly. To succeed jammer, successful against satellites, need considerably power aircraft carried pseudolites. pseudolite delivers into area 40-70 dB stronger than coming directly satellites. By timing for 100 % time coverage, enemy C/A code receivers will jammed they limited J/S capability 30 dB.