An expert in software-defined radio — the modification of radio signals with a computer, as opposed to mixers, amplifiers, and other hardware — Humphreys used a general-purpose processor to build what he calls a "formidable lying machine," a box that "listens" to the G.P.S. signal, gradually builds a bogus signal that aligns perfectly with the real, and then slowly overtakes it.
An expert in software-defined radio the modification of radio signals with a computer, as opposed to mixers, amplifiers, and other hardware—Humphreys used a general-purpose processor to build what he calls a "formidable lying machine," a box that "listens" to the G.P.S. signal, gradually builds a bogus signal that aligns perfectly with the real, and then slowly overtakes it.
The FAO has even suggested the shift may amount to "a change of paradigm" in farming.Such a shift could undermine the hopes raised by new investment because farmers would get bogus price signals, efficiency would be compromised and because, says IFAD's head of operation, "it's harder to do good projects where the policy environment is poor".
The bigger worry is spoofing, the transmission of a bogus G.P.S. signal that nearby receivers mistake for the real thing.
The new sensitivity is due to new techniques for calibrating dark matter signals and eliminating bogus collisions by cosmic and gamma rays.
The Navy wrote the signals off as bogus.
During a five-day visit to India, Johnson said the clampdown on overseas students and bogus colleges had sent out the wrong signal and could hit the £2.5bn revenue stream that British universities earn from their fees.
Youmans said in his affidavit that Hall told the bogus Soviet operative he had been passing highly sensitive signal intelligence documents to the Soviet and the East German intelligence services since late 1982.
Companies were accused of signaling their bidding strategies by including at the end of bogus bids the numbers of licenses they were interested in.
"It's a mixed bag really," said Brad Schallert, deputy director of international climate cooperation at WWF. "There's a strong signal in there that you have got to have good carbon credits, not bogus ones.
