Determining the angle of a microwave signal requires a pretty big receiver dish (or an array of receivers, at least).
The wavelength of the GPS L1 band is 19cm, you'd need (roughly) something of at least 10x that size to get a good sense of where a signal is coming from, so on the order of 2m.
A single good antenna and sensitive amplifier gets you a fix on more satellites, which provides good accuracy with less space and hardware used.
Not really.
Determining the angle of a microwave signal requires a pretty big receiver dish (or an array of receivers, at least).
The wavelength of the GPS L1 band is 19cm, you'd need (roughly) something of at least 10x that size to get a good sense of where a signal is coming from, so on the order of 2m.
A single good antenna and sensitive amplifier gets you a fix on more satellites, which provides good accuracy with less space and hardware used.