GPS under rainy day

Hello all!
Has anyone gotten data from a GPS module during fly in a rainy day?
Was that good? Was it to long to recover synchronization?
Thanks in advance,
Kruk
Reply to
Kyvuzmi
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| Has anyone gotten data from a GPS module during fly in a rainy day? | Was that good? Was it to long to recover synchronization?
I'm not really familiar with your `GPS module', but your standard hand-held or vehicle mounted GPS works just fine, even in the heaviest rain.
GPSs work at around 1-1.5 mhz (very low frequencies) ... I don't think rain attenuates these frequencies by any signifigant degree. Perhaps you're thinking of systems like DirectTV which use frequencies around 12ghz ...
Reply to
Doug McLaren
Hi,
Actually the following is true:
The satellites transmit on two L-band frequencies: L1 = 1575.42 MHz and L2 = 1227.6 MHz
The frequencies are GHz, not MHz. Signals are somewhat degraded by atmospheric effects (weather), but rarely enough to cause any difficulty in computing position!
John
Doug McLaren wrote:
Reply to
John Morley
| The satellites transmit on two L-band frequencies: L1 = 1575.42 MHz and | L2 = 1227.6 MHz | | The frequencies are GHz, not MHz.
Oops. Well, what's a factor of 1000 between friends?
:)
| Signals are somewhat degraded by atmospheric effects (weather), but | rarely enough to cause any difficulty in computing position!
Certainly, you wouldn't be flying in such weather ...
Reply to
Doug McLaren
I hate to burst any bubbles, but if GPS signals were degraded by weather I very seriously doubt that the FAA would ever approve a GPS approach to anywhere.
They have approved several with the proper GPS equipment.
Jim Branaum AMA 1428
Six_O'clock_High Target snipped-for-privacy@Guns.com
option.
Reply to
Six_O'Clock_High

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