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<div class="moz-cite-prefix">Really? I thought helix antennae were
poor choices because they accept signals at low angles. In fact
the article makes a point of saying it accepts low-angled signals.<br>
<br>
From satellites coming in at only 5 deg above the horizon, they're
prone to distortion from the atmosphere and ground obstacles. Now
the software can just refuse to use those satellites because it
knows the angles from the ephemeris data. <br>
<br>
But as I understand it, a lot of the multipath reflections-
delayed versions of the original signal bouncing off things- often
comes in at a low angle, so the antenna rejecting the low-angled
reception will help. These signals traveled a longer path and
only distort the pseudorange. Since this is a feature of the
antenna, software can't just elect to reject these signals- and it
if could, it would.<br>
<br>
Danny<br>
<br>
On 3/11/2014 1:10 AM, Anton Strydom wrote:<br>
</div>
<blockquote
cite="mid:CAFCwRdLVOHEbwOBGrmYbgfgVx571y5kuK=sw3U9_sRSmdfW2Xg@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Max
<div><br>
</div>
<div>Have a look at the attached, this is what I started off
using it with a U-Blox 6 T receiver</div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Anton</div>
</div>
<div class="gmail_extra">
<br>
<br>
<div class="gmail_quote">On Tue, Mar 11, 2014 at 7:52 AM,
mazahirp <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:mazahir.poonawalla@gmail.com" target="_blank">mazahir.poonawalla@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi All,<br>
<br>
Can anyone help me to buy a good antenna which can give me
accurate results.<br>
I am using u-blox 6T as receiver and RTKLIB.<br>
Currently I am using GILSON GPS active antenna on both the
receivers (base<br>
and rover). I am not an expert into antennas so I wanted to
know if this<br>
antenna is good enough? If not, which one should I go for.
My budget is<br>
around $100.<br>
<br>
Thanks for the help.<br>
<br>
Cheers,<br>
Max<br>
<br>
<br>
<br>
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