[FoxHunt] TDOA questions.
Jay Hennigan
jay at west.net
Thu Aug 5 16:43:36 EDT 2010
On 8/5/10 7:55 AM, Marvin Johnston wrote:
>
> The problem with close in hunts is the terrain/reflections. Some
> experiments we did a year or so ago showed that we could accurately get
> a bearing to the transmitter at distances as short as 5 - 10 feet or
> less. We did have to play around with the antenna height and ground
> planes to get that consistent accuracy though.
Terrain/reflections are substantially more of an issue with distant
targets than close in. Unless you're hunting an ELT in a box inside a
UPS warehouse with lots of big metal doors and walls, then things get
interesting. Don't ask me how I know this.
--
Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
Impulse Internet Service - http://www.impulse.net/
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