mictronics / pluto-gps-sim-win32 Goto Github PK

The last two options are in lowercase where they should be uppercase

Hi,

The 32bit win version does not have the "12-bit IQ DAC amplitude" experimental option, I assume this was not ported for this reason?

I would be interested to test the 12bit Dac version in windows. (Improvement by using 9-bit sin/cos tables generating the baseband signal?)

I notice you have changed the gain setting (iq_gain) for the satellites to 100 for this and only 18 for the 16bit IQ dac section of your baseband generation code.

Your comments in the unix/c build state this was for:
/*

• Uncomment to use only 12Bit DAC LUT with high antenna gain.
• By default use 16Bit DAC LUT with low antenna gain.
• Full DAC dynamic range -> Better SNR and signal quality, faster 3D lock.
  */

As a matter of interest, the default ADALM PLuto antenna - [Jinchang Electron - JCG401]https://wiki.analog.com/_media/university/tools/pluto/users/jcg401.pdf)
and review here: https://ez.analog.com/thread/100485-adalm-pluto-antenna-performance

Is this the antenna you used when testing the IQ for 12 vs 16 ? Did the 12bit work better on the generic Jinchang antenna?

I have seen a suggestion to use this antenna: https://www.adafruit.com/product/1858 - any suggestions?

Missing in your Readme from the original gps-sdr-sim repository is the mention of the correct coupling method to devices. Might be handy to include this for other Pluto enthusiasts?

Transmitting the samples
The TX port of a particular SDR platform is connected to the GPS receiver under test through a DC block and a fixed 50-60dB attenuator.

Windows 7, connection to ADALM-Pluto using a network context from hostname or IP fails.

• Drivers installed fine.
• Pluto network interface showing up in ipconfig.
• Pinging Pluto IP's 192.168.2.1 & 192.168.2.10 successfully.
• iio_info.exe -s works, finds context.
• iio_info.exe -n 192.168.2.10 does not work. Fails with no context, but is reporting back "No error"?! Same in my source code.

This analogdevicesinc/libiio#158 might be an similar issue.

Temporary fix:
Connect to ADALM-Pluto using the USB URI option. e.g. -U usb:3.5.4

Hi, the variable "navfile" which stores the file with de ephemerides is empty when downloading from ftp so it fails.

Hey,
I'm just generating a new GPS signal via Pluto SDR but the Signal just gets jammed.
./pluto-gps-sim -e brdc3250.19n -l 39.028225,125.751300,100 -U usb:1.4.5
What did i do wrong?