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analysis:spacecraft [2019/11/26 00:39] Guifre |
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- | # Spacecraft tracking activities | ||
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- | 1. Observational setup | ||
- | 2. Data processing | ||
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- | Required software: | ||
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- | <WRAP center round box 60%> | ||
- | * Makekey[[https://github.com/gpikkio/MakeKey|1]] | ||
- | * SWspec [[https://bitbucket.org/spacevlbi/swspec/src/master/|2]] | ||
- | * Spec analysis tools [[https://bitbucket.org/gofrito/sctrackanalysis/src/master/|3]] | ||
- | </WRAP> | ||
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- | ### 1. Observational setup | ||
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- | ### 2. Data processing | ||
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- | The pipeline to retrieve the Doppler and residual phase can be summarised as: | ||
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- | {{:analysis:sc_pipeline_ma.png?500|}} | ||
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- | In therms of software the data processing is summarised in 3 steps: \\ | ||
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- | <WRAP center round box 60%> | ||
- | 1- Running the software spectrometer to see the spectrum of the signal recorded (**SWspec**) \\ | ||
- | 2- Making a first estimate of the pcal measurements (**calculatePcalCpp**) \\ | ||
- | 3- Running the tracking software (**SCtracker**) \\ | ||
- | </WRAP> | ||
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- | ====== Running Software Spectrometer (SWspec) ====== | ||
- | It takes the raw VLBI data, reads any desired channel and performes a high-resolution integrated-time FFT of the entrie scan. It uses an initial settings file (inifile.ini). I usually store the inifile.ini in the same folder with the results. There are several settings that can be modified. However, the main ones are: | ||
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- | <WRAP center round important 60%> | ||
- | UseFile1Channel = 1 \\ | ||
- | BaseFilename1 = m190522_Hb_VDIF_If000A_%fftpoints%pt_%integrtime%s_ch%channel%\\ | ||
- | Notes: \\ | ||
- | # Change then channel value from 1 to 8, one per channel \\ | ||
- | # Change IF000A to A/B/C/D/E/F to cover all boards \\ | ||
- | </WRAP> | ||
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- | We run the program by executing this line: | ||
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- | ** swspectrometer inifile.ini /mnt/vbsPcal/m0000_Hb_No0001a.vdif** | ||