GNSS Frequency Guide - LabSat 3 Wideband

This is a preview of the LabSat 3 Wideband's integral web server which has been designed to easily setup your GNSS testing program. The GNSS Frequency Guide can also be used separately as a GNSS frequency selection tool or a look-up chart for GNSS signal location.

Select your bandwidth requirement - select your required frequencies -  see available quantisation levels.

 
SELECT SIGNAL DISPLAY
 
 
 
GPS
   
     Gallileo
   
     GLONASS
   
     BeiDou
   
     Other
   
Show individual signals

SELECT BANDWIDTH
10 MHz    30 MHz    56 MHz   

SELECT NUMBER OF SIGNAL BANDS
1 Band    2 Bands    3 Bands

SIGNAL QUANTIZATION
Current quantization:
&nbsp

CENTRE FREQUENCY
Move coloured bandwidth boxes in diagram above to change centre frequencies (press left mouse button and drag to left or right)
Band 1: 1575Mhz-1575Mhz
1575Mhz
Band 2: 1575Mhz-1575Mhz
1575Mhz
Band 3: 1575Mhz-1575Mhz
1575Mhz

Example:

  • 1) Select signal display: All signals including 'show individual signals'.
  • 2) Select '56 MHz' bandwidth.
  • 3) Select one signal band '1 Band'.
  • 4) Note quantisation is 3 bits.
  • 5) Move the red box to select the centre frequency.
  • 6) Select different bandwidth/channels to explore full capability.

 

Bandwidth Setting:

LabSat 3 Wideband has three bandwidth settings. 56 MHz, 30 MHz and 10 MHz.

The bandwidth of the GNSS signals varies, for example a GPS L1 C/A code signal has a bandwidth of 24 MHz. However, due to the signal design a bandwidth of 9.66 MHz will capture enough data to allow the receiver under test to acquire, track and navigate as with LabSat 3 single, dual and triple constellation devices.

Other signals with a different signal design like Galileo E1 PRS signal has a bandwidth of 46 MHz and a signal design spread across the bandwidth.

Many other signals have a similar requirement like GPS L1/L2 P code and M code. LabSat 3 Wideband has been designed to capture all these signals.

Frequency Setting:

LabSat 3 Wideband is designed to capture and replay GNSS signals in the upper L-Band (1559 - 1610 MHz) and lower L-Band (1164 - 1300 MHz).

Quantisation setting:

LabSat 3 Wideband can record and replay GNSS Signals at quantisation levels of:

  • 3 bits (3 bit I + 3 bit Q)
  • 2 bits (2 bit I + 2 bit Q)
  • 1 bits (1 bit I + 1 bit Q)