<p>Yes, assuming your &quot;square array&quot; is planar, then the vertical angle of the localisation is ambiguous (could be up or down)</p>

CC BY-SA 4.0
2022-07-20T08:11:23.493Z
2022-07-20T08:11:23.493Z
Chloe
<p>I am struggling to interpret the output of the ‘Bearing Calculator’ module in PAMGuard using a squared array configuration. I think I understand the primary angle as being right or left (please, correct me if I am wrong), but I am not sure about the secondary angle for this configuration that goes until 90 degrees. Does anyone is familiar with this module and this configuration?</p>
<p>Here one example of a localised whistle and its bearing output:
<a href="https://i.sstatic.net/3JdnO.png" rel="noreferrer"><img src="https://i.sstatic.net/3JdnO.png" alt="Localised whistle in PAMGuard using 'Whistle Detector' (WMD) and 'Bearing Calculator' modules." /></a></p>
<p>Here is a sequence of the same whistle produced around the boat and we can see the animal moving:
<a href="https://i.sstatic.net/bJyWu.png" rel="noreferrer"><img src="https://i.sstatic.net/bJyWu.png" alt="enter image description here" /></a>
<a href="https://i.sstatic.net/dIaZE.png" rel="noreferrer"><img src="https://i.sstatic.net/dIaZE.png" alt="enter image description here" /></a>
<a href="https://i.sstatic.net/lk7XP.png" rel="noreferrer"><img src="https://i.sstatic.net/lk7XP.png" alt="enter image description here" /></a></p>

<pamguard><localisation><array><whistle-moan-detector>
How to interpret the localisation output in PAMGuard using squared array configuration in the 'Bearing Calculator' module?
# How to interpret the localisation output in PAMGuard using squared array configuration in the 'Bearing Calculator' module?

(Asked by: username_0 on 2022-07-07)

I am struggling to interpret the output of the ‘Bearing Calculator’ module in PAMGuard using a squared array configuration. I think I understand the primary angle as being right or left (please, correct me if I am wrong), but I am not sure about the secondary angle for this configuration that goes until 90 degrees. Does anyone is familiar with this module and this configuration?

Here one example of a localised whistle and its bearing output:
[![Localised whistle in PAMGuard using 'Whistle Detector' (WMD) and 'Bearing Calculator' modules.](https://i.sstatic.net/3JdnO.png)](https://i.sstatic.net/3JdnO.png)

Here is a sequence of the same whistle produced around the boat and we can see the animal moving:
[![enter image description here](https://i.sstatic.net/bJyWu.png)](https://i.sstatic.net/bJyWu.png)
[![enter image description here](https://i.sstatic.net/dIaZE.png)](https://i.sstatic.net/dIaZE.png)
[![enter image description here](https://i.sstatic.net/lk7XP.png)](https://i.sstatic.net/lk7XP.png)

**Tags:** pamguard, localisation, array, whistle-moan-detector


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## 1 answers

### Answer by username_1 on 2022-07-20. Score: 1

Yes, assuming your "square array" is planar, then the vertical angle of the localisation is ambiguous (could be up or down)


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