IridiumLive

Welcome to IridiumLive!

IridiumLive is a Blazor server application which allows for the real-time vizualization of the iridium satellites as they pass above your location.

It is another tool which allows for the visualization of live data coming from gr-iridium. Will not work without it.

You install the application in your local network, and use the browser to interact with it.

Setup

Binaries: https://github.com/microp11/iridiumlive/releases

To build/run from source you need dotnet version 3.1.* installed, then run:

git clone https://github.com/microp11/iridiumlive
cd iridiumlive
cd IridiumLive
dotnet run

At this time the following ports have been hard coded:

 7777: IridiumLive server port,
15007: udp port for receiving data from gr-iridium and iridium-toolkit.

If the ports cannot be bound to, use:

lsof -i :7777
lsof -i :15007

to find out what's attached to these port(s).

You could use:

lsof -ti :7777 | xargs --no-run-if-empty kill -9

to forcefully clear out the port as part of your pre-start routine.

The data will be provided by your personal install of gr-iridium and iridium-toolkit (see gr-iridium and iridium-toolkit). See bottom of page for quick instructions.

1. On the same machine as gr-iridium download and extract the python udp transmitter udp-for-il.py. Please install in the same folder as gr-iridium.
2. Depending of your intended OS target, download and extract the appropriate IridiumLive archive. There is no installation needed, simply extract in a folder of its own. You can extract either on the same machine or to a different one.
3. In the udp-for-il.py script, the server_address (192.168.2.10) denotes the machine where IridiumLive is installed. Modify it accordingly. This address is also where you will open your browser to later on:

   
   ...
   import socket

ap = ("192.168.2.10", 15007) sk = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM) def sendOverUdp(line): ...

4. Change the center frequency of the gr-iridium decoder to include the Ring Alert band as described at min 9 in the  Stefan “Sec” Zehl, schneider during their presentation at [The Eleventh HOPE (2016): Iridium Satellite Hacking](https://www.youtube.com/watch?time_continue=562&v=JhJT7Cvh6NE&feature=emb_logo).
5. Instantiate the iridium receiver and pipe through decoder, filter and udp transmitter adapting the following command line:

user@computer:~/gr-iridium$ iridium-extractor --offline --multi-frame examples/hackrf.conf | ~/iridium-toolkit/iridium-parser.py -p /dev/stdin /dev/stdout | python udp-for-il.py

6. Only continue to next step if you see udp lines being transmitted:
```python
191
1576397118 | i:  68/s | i_avg:  19/s | q:    0 | q_max:    7 | o: 106/s | ok:  63% | ok:  43/s | ok_avg:  51% | ok:      32064 | ok_avg:   9/s | d: 0
1576397119 | i:  67/s | i_avg:  19/s | q:    0 | q_max:    6 | o: 103/s | ok:  64% | ok:  43/s | ok_avg:  51% | ok:      32108 | ok_avg:   9/s | d: 0
1576397120 | i:  58/s | i_avg:  19/s | q:    0 | q_max:    5 | o:  91/s | ok:  57% | ok:  33/s | ok_avg:  51% | ok:      32142 | ok_avg:   9/s | d: 0
1576397121 | i:  69/s | i_avg:  19/s | q:    0 | q_max:    4 | o: 115/s | ok:  61% | ok:  42/s | ok_avg:  51% | ok:      32185 | ok_avg:   9/s | d: 0
169
173
191
169 <- the length of one blob sent over UDP
173
191
169

7. Run IridiumLive.
8. Set up time accurately on the gr-iridium machine!
9. Open any browser at http://**server_address**:7777 and enjoy!

Credits

• gr-iridium
• iridium-toolkit
• blazor workshop
• spa with blazor server and ef

Disclaimer

This was my first .NET Core web app. Blazor on top of it. Be merciless and gentle!

Quick install on gr-iridium and iridium-toolkit for Rapberry Pi

The following has been tested on RPi 400 with https://sourceforge.net/projects/dragonos-pi64/
Currently DragonOs contains gnuradio 3.8+
Use the following to have your gr-iridium aligned with these versions:

git clone -b maint-3.8 https://github.com/muccc/gr-iridium.git
cd gr-iridium
mkdir build
cd build
cmake ..
make
sudo make install
sudo ldconfig

git clone https://github.com/muccc/iridium-toolkit.git
git checkout -b local-branch-from-commit e173069f43189ee7dfca2875f56ac284e74b17e4