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Difference between revisions of "CW-Analyzer Tool"
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Are filters that modify the traces from a given trace source (that can be another Preprocessing Module or the Trace Manager) and works as a new trace source to the next module in the chain (called trace observer). | Are filters that modify the traces from a given trace source (that can be another Preprocessing Module or the Trace Manager) and works as a new trace source to the next module in the chain (called trace observer). | ||
| − | === | + | === Add Noise: Amplitude === |
| + | Add random noise to the traces. Used for testing, has no use in actual analysis. | ||
| + | === Add Noise: Time Jitter === | ||
| + | Add random jitter. Used for testing, has no use in actual analysis. | ||
| + | |||
| + | === Decimation: Clock Recovery === | ||
| + | Attempts to 'recover' the clock by band-pass filtering, and then uses that to decimate to only points of interest. ****CURRENTLY NOT SUPPORTED**** | ||
| + | |||
| + | === Decimation: Fixed === | ||
| + | Decimate (reduce the sample rate) by a fixed factor. | ||
| + | |||
| + | === Digital Filter === | ||
| + | Frequency specific filter. | ||
| + | |||
| + | === Normalize === | ||
| + | Normalize by standard deviation. | ||
| + | |||
| + | === Resync: Cross Correlation === | ||
| + | Use cross-correlation to detect shift between a 'reference trace' and every input trace. In practice the other resync methods seem to work better. | ||
| + | |||
| + | === Resync: Peak Detect === | ||
| + | Line up traces so peak (either max positive or max negative) within some given range of points all aligns. | ||
| + | For each trace the following must hold or the trace is rejected: | ||
| + | (1-valid limit) < (peak value from candidate trace) / (peak value from reference) < (1+valid limit) | ||
| + | If 'valid limit' is 0 then this is ignored, and all traces are kept. | ||
| + | |||
| + | === Resync: Resample based on Zero-Crossing === | ||
| + | Deal with resampling 'bins' based on zero-crossing detection. | ||
| + | |||
| + | === Sum of Difference === | ||
This module, also known as Sum of Absolute Difference (SAD), is used to re-synchronize traces as in the case of signals with time jitter. See [[Sum of Absolute Difference (SAD) Pre-Processing]] | This module, also known as Sum of Absolute Difference (SAD), is used to re-synchronize traces as in the case of signals with time jitter. See [[Sum of Absolute Difference (SAD) Pre-Processing]] | ||
Revision as of 10:17, 13 July 2016
Contents
Preprocessing Modules
Are filters that modify the traces from a given trace source (that can be another Preprocessing Module or the Trace Manager) and works as a new trace source to the next module in the chain (called trace observer).
Add Noise: Amplitude
Add random noise to the traces. Used for testing, has no use in actual analysis.
Add Noise: Time Jitter
Add random jitter. Used for testing, has no use in actual analysis.
Decimation: Clock Recovery
Attempts to 'recover' the clock by band-pass filtering, and then uses that to decimate to only points of interest. ****CURRENTLY NOT SUPPORTED****
Decimation: Fixed
Decimate (reduce the sample rate) by a fixed factor.
Digital Filter
Frequency specific filter.
Normalize
Normalize by standard deviation.
Resync: Cross Correlation
Use cross-correlation to detect shift between a 'reference trace' and every input trace. In practice the other resync methods seem to work better.
Resync: Peak Detect
Line up traces so peak (either max positive or max negative) within some given range of points all aligns. For each trace the following must hold or the trace is rejected:
(1-valid limit) < (peak value from candidate trace) / (peak value from reference) < (1+valid limit) If 'valid limit' is 0 then this is ignored, and all traces are kept.
Resync: Resample based on Zero-Crossing
Deal with resampling 'bins' based on zero-crossing detection.
Sum of Difference
This module, also known as Sum of Absolute Difference (SAD), is used to re-synchronize traces as in the case of signals with time jitter. See Sum of Absolute Difference (SAD) Pre-Processing
