One of the more interesting facets of GPS is that, at least from the receiver ... The first, a mixer board, receives the signal via an active antenna and converts it to a lower frequency.

Engineers often turn to VNAs to measure the return-loss characteristics of an antenna, but they must be used carefully ...

Lofted beneath a weather balloon into the stratosphere, a radiosonde transmits a wealth of data back to the ground ... helical antenna used by the Vaisla R92 radiosonde’s GPS receiver, with ...

Space Leasing International (SLI), a company that leases space infrastructure to customers, announced this week that it has acquired 10 six-meter S- and X-band tracking antennas from Microsoft. Terms ...

This means that they can be used on planes just as effectively as on the ground ... What types of GPS devices are not allowed ...

The technology’s effectiveness in neutralizing ground-based threats positions it as a critical ... will inform updated Minimum Operational Performance Standards for GPS/GNSS antennas and cockpit ...