Accuracy of two dimensional interferometers

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senmeis
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Hi,

the accuracy of interferometers for finding emitting direction in one direction is given as:

Δθ = Δφ•λ/(2pi•l•cosθ)

but what would it be if two dimensional accuracy is required, something like interferometer in crossing?

I thought this could be found somewhere in Internet, but I just don’t have luck.

Senmeis
 
I don't understand the physical setup and what you are trying to find.
 
This angular error is only valid for one dimension. I wonder what is the combined angular error if two crossed inteferometers are used.

Senmeis
 
Are you suggesting a two dimensional (rectangular) array or just a pair of crossed linear arrays?