Comments (2)
On the original bladeRF device, I had to play around with gain settings on the command line to get ADSB decoding to work. The bladeRF_adsb program doesn't provide usage statement, but you can examine the bladeRF_adsb.c source to see what it accepts. For convenience, I'll put it here as well:
bladeRF_adsb [LNA_GAIN] [RX_VGA1] [RX_VGA2]
where:
LNA_GAIN = {min, mid, max, unified}
RX_VGA1 = Gain (dB) of first stage after LNA
RX_VGA2 = Gain (dB) of second stage after filter
I was able to use:
bladeRF_adsb mid 25 25
It looks like the "unified" option is intended for the newer blade devices (and seems to work with the older too?) . If that is set, from looking at the source code, it appears that will set this unified gain level to 35 dB. So just like this:
bladeRF_adsb unified
The source shows that should be the default behavior for the A4 anyway. However, it doesn't look like this 35 dB setting is available to modify from the command line, but you could change it in the source and rebuild the utility to try it at other levels.
from bladerf-adsb.
I'm having issues using the BladeRF-A4 to decode ADSB messages. Everything seems okay on the command line (I get no errors), however no messages are ever decoded. I know that the antenna I'm using is able to decode ADSB as it works fine with an RTL-SDR. I've also tried plugging in the antenna to both RX ports on the A4.
I had the same problem too trying to use the FPGA adsb build.
Antenna/lna combo works great with rtl and ettus b210 sdr's and even a bladerf v1 (with adsb fpga firmware). I looked into the host sw and nothing was getting transferred to it. This was using the adsbxA4.rbf downloaded from the nuand website https://www.nuand.com/fpga_images/. It reports as v0.8.
I'm on ubuntu 20.04, using the nuand ppa (libbladerf v2.2.1 & fpga v0.11.0) with a bladeRF 2.0 micro A4.
I did a compile from source for the adsb fpga image, set to v0.11.0 (git checkout fpga_v0.11.1) using the build instructions on https://github.com/Nuand/bladeRF-adsb#building-ads-b-image, and now it works.
sean
from bladerf-adsb.
Related Issues (16)
- autoload bitstream from ${CMAKE_INSTALL_PREFIX}/share/Nuand/bladeRF/
- OSX - 'libbladeRF.h' file not found
- BladeRF A4 Problem HOT 9
- make file error
- FPGA version issue HOT 1
- Link to dump1090 repository is obsolete
- bladeRF-adsb fails to compile with release 2023.02
- Mode A/C Signal Integration
- remove binaries from git HOT 2
- change license so that users can...use it HOT 4
- typo in license
- bladeRF-adsb make error HOT 1
- make error and ./bladeRF-adsb cannot execute binary HOT 1
- missing -lbradeRF?? HOT 6
- Missing costellation_mapper_p.vhd file in the vhdl directory
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from bladerf-adsb.