Some basic questions about radio interferometer (Direction Finding)

[senmeis]

Hello,

I’m a beginner to interferometer technology. While reading the attached article about this technology I find two formulas are missing. Please help me with them.

1. On page 5-8.8: rms angular accuracy.
2. In Table 3 on page 5-8.9: DF Accuracy.

As far as I understand the space between antennas shall be
a. Great enough for better accuracy
and
b. Small enough (< λ/2) to avoid ambiguity.

Is that correct?

At last I have a question to „gross error rate“? What does it mean in interferometer? You can find this term here: http://www.faqs.org/patents/app/20090079634.

Thanks in advance
Senmeis

 

[Baluncore]

As far as I understand the space between antennas shall be
a. Great enough for better accuracy
and
b. Small enough (< λ/2) to avoid ambiguity.
Is that correct?

Yes, that is a correct generalisation.
When you employ more than two elements it becomes more complex.