FDOA-FDOA geolocation is necessary for CW signals.
The geolocation of a CW signal is nearly impossible with TDOA-FDOA.
The ground transmitter radiates a CW signal of 890 MHz to the transponder in the vehicle.
A few Soviet aircraft, such as some versions of the MiG-23 and MiG-27, used an auxiliary guidance pod or aerial to provide a CW signal.
CW signals returning from an auroral reflection have no distinct sound or tone but simply sound like a swishing or whooshing noise.
Dish Network does not carry a local CW signal in the Lincoln-Hastings-Kearney and St. Joseph markets.
Each 10-hour segment was analyzed for CW signals by the volunteers computers using a matched-filtering technique.
CW signals did not have audio amplitude modulation, so a different detector was needed.
A VT fuze, screwed onto the head of a projectile, radiated a CW signal in the 180-220 MHz range.
That had to await the invention of pulsed radar, and later, additional encoding techniques to extract this information from a CW signal.