_____________________________________________________ 1 PolaRx4_PRO and PolaRx4TR_PRO
PolaRx4 Product Family Hardware Manual v2.0.0
18
A positive value of the IFB at frequency
F
means that the pseudorange at that frequency will be larger
than the pseudorange at L1/E1, even in the absence of any ionospheric divergence or satellite bias. For
example, the second graph shows that the receiver introduces about 2.4m bias in the GPS L5
pseudoranges compared to the GPS L1 pseudoranges.
The graphs are provided for illustrative purpose only. They give an indication of the order of magnitude
of the biases to be expected for PolaRx4 receivers, and of the shape of the bias-versus-frequency curve.
The exact bias values are slightly different for each receiver unit and depend on many parameters next
to the frequency (signal modulation, temperature, aging, impedance matching with antenna,…).
However, some general properties will be true in all cases:
The largest IFBs are found at the L5 and the GLONASS frequencies, with typical values of a few
meters.
For GLONASS, the IFBs increase with the GLONASS frequency number. A difference of 1.5 to 3
meters between the lowest and the highest frequency number is typical.
1.11
Hardware Specifications
Power consumption:
6 W (operating)
0.9 W (stand-by, see section 1.8)
Size:
234 x 140 x 37 mm (length including the connectors)
Temperature Range:
-40 to +60 °C (operational)
-55 to +85 °C (storage)
Ingress Protection:
IP65
Shock:
MIL-STD-810F, 516.5
Vibration:
MIL-STD-810F, 514.5
