pyspectrum:具有Web UI的Python sdr频谱分析仪

# A Python RF spectrum analyser  * Takes digitised IQ samples from some source to give a live spectrum and spectrogram. * All samples are used for the FFT. Providing detection of short bursting signals. * Has a plugin architecture for sources and analysis of spectrums. * Can snapshot IQ samples to file upon an event, currently a manual trigger. * Has a web based UI that can be used to take measurements on the spectrum. This was an exercise in writing some python which expanded into providing a web based UI. The fft computations are done by libraries in Python, so not the fastest. If you have an rtlsdr working with any of the other tools then this analyser should work as well once the python rtlsdr support is installed in your environment. Performance depends on your machine and how the supporting fft libraries were compiled. I have certainly kept up with streams of data at over 3Msps. All the input sources are provided by python modules with the different SDR platforms are supported by corresponding Python libraries gleaned from Pypi. ## Input modules: * audio - useful for testing * file - wav and raw binary supported, all files must be in snapshot directory * pluto (IP) - Analog devices pluto SDR on IP, 70Mhz to 6GHz but wide open * rtlsdr - Direct connection via USB * rtltcp - rtl over tcp * socket - any stream of IQ samples There is soapy support for sdrplay, but i have failed to get this working again after an initial success. ## Input data IQ types: * 8bit offset binary * 8bit 2's complement * 16bit 2's complement little endian (x86) * 16bit 2's complement big endian * 32bit ieee float little endian * 32bit ieee float big endian ## Problems * Converting input data to complex float32 numpy arrays. This takes a lot of time, which would be a lot simpler in C/C++. * Soapy support is not really tested anymore (sdrplay support relies on soapy). * if the programme exceptions immediately, check the dependencies are met. ## Tested with the following: Windows: audio, file, pluto (IP), rtlsdr, rtltcp, socket Linux : audio, file, pluto (IP), rtlsdr, rtltcp, socket soapy(audio, rtlsdr, sdrplay) On windows make sure to use the correct rlibrtlsdr.dll for your python 32bit/64bit Since, once, getting soapy to work under Linux i have failed to replicate this ever again - pity it was my only interface to an sdrplay device ## Examples Some examples for running from command line python ./SpectrumAnalyser.py - Then goto http://127.0.0.1:8080 and configure the source python ./SpectrumAnalyser.py -h - help python ./SpectrumAnalyser.py -i? - list input sources that are available Some default input selections, normally select trhough web interface: python ./SpectrumAnalyser.py -ipluto:192.168.2.1 -c433.92e6 -s600e3 - pluto at 433MHz and 600ksps python ./SpectrumAnalyser.py -ipluto:192.168.2.1 -c433.92e6 -s1e6 --plugin analysis:peak:threshold:12 --plugin report:mqtt:broker:192.168.0.101 - detect and log signals python ./SpectrumAnalyser.py -ifile:test.wav -c433.92e6 - a test wav file python ./SpectrumAnalyser.py -iaudio:1 -s48e3 -iaudio:1 - audio input python ./SpectrumAnalyser.py -irtlsdr:kk -c433.92e6 -s1e6 - rtlsdr SOAPY may not work: python ./src/SpectrumAnalyser.py -isoapy:audio -s48000 -c0 - soapy input python ./src/SpectrumAnalyser.py -isoapy:sdrplay -s2e6 c433.92e6 ## Dependencies The following python modules should be installed. Optional ones provide specific capabilities. Required: numpy websockets Testing: pytest Optional: scipy - another FFT library pyfftw - another FFT library, faster above 8k size pyadi-iio - pluto device iio - pluto device pyrtlsdr - rtlsdr devices sounddevice - audio devices soapysdr - soapy support paho-mqtt - mqtt functionality (client) ``` pip3 install -r src/requirements.txt ```