en:algorithms
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en:algorithms [2019/02/25 15:16] – fluktuacia | en:algorithms [2019/04/11 17:17] (current) – [Existing iPython scripts] fluktuacia | ||
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- | ====== Methods of data processing used in Bolidozor | + | ====== Methods of data processing used in Bolidozor |
- | This site contains several | + | This site contains several |
* Estimate of an vector of meteor in the atmosphere | * Estimate of an vector of meteor in the atmosphere | ||
- | * Record of available meteorological data for future reconstructions (satellite images, ČHMÚ measurements at that time, radar images) | + | * Record of available meteorological data for future reconstructions (satellite images, ČHMÚ measurements at a particular |
* Data collections from individual stations | * Data collections from individual stations | ||
- | * Calculations of vector and vertical wind profile | + | * Calculations of vector and vertical wind profile |
- | There are some already existing projects that can be connected with data processing. | + | There are some already existing projects that can used in the process of data processing. |
* [[http:// | * [[http:// | ||
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===== Calculation of meteor trail parameters | ===== Calculation of meteor trail parameters | ||
- | There already exists a network dealing with similar problem called [[http:// | + | There already exists a network dealing with similar problem called [[http:// |
The most realistic solution seems to be a calculations using spatial coordinates of meteor’s head-echo. This approach has already been tested | The most realistic solution seems to be a calculations using spatial coordinates of meteor’s head-echo. This approach has already been tested | ||
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=== Meteor detection === | === Meteor detection === | ||
- | Currently, meteors are detected by comparing the signal intensity in area, where we expect the radio reflection with the signal intensity in area with frequency shift against | + | Currently, meteors are detected by comparing the signal intensity in an area, where we expect the radio reflection, with the signal intensity in an area with frequency shift to the transmitted signal. |
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* Sending a control network packet with a request for data containing the suspicious part from the nearest stations. [[http:// | * Sending a control network packet with a request for data containing the suspicious part from the nearest stations. [[http:// | ||
* Correlation of detected signal with noise on other stations. | * Correlation of detected signal with noise on other stations. | ||
- | * As a result of the calculation the corresponding signal should be found in noise on other stations. | + | * As a result of the calculation, the corresponding signal should be found in noise on other stations. |
* A detection will be confirmed if the meteor will be detected on several stations at the same time. | * A detection will be confirmed if the meteor will be detected on several stations at the same time. | ||
- | * Otherwise, the event will be evaluated as false detection. | + | * Otherwise, the event will be evaluated as a false detection. |
In case of positive detection, model parameters to calculate the replica have to be extracted from the signal. | In case of positive detection, model parameters to calculate the replica have to be extracted from the signal. | ||
- | Calculation of path will be carried out using several methods. First is the [[https:// | + | Calculation of path will be carried out using several methods. First is the [[https:// |
Next step is a measurement of doppler parameters of meteor’s head-echo, which determines the inclination and speed of the path. | Next step is a measurement of doppler parameters of meteor’s head-echo, which determines the inclination and speed of the path. | ||
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- Calculation of meteor position with respect to individual stations (can be done using the reflection from meteor trail). | - Calculation of meteor position with respect to individual stations (can be done using the reflection from meteor trail). | ||
- Calculation of path vector in absolute coordinates. | - Calculation of path vector in absolute coordinates. | ||
- | |||
==== Data from DVB-T ==== | ==== Data from DVB-T ==== | ||
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* Command assignment to individual stations. | * Command assignment to individual stations. | ||
- | * Start re-planing due to unsuccessful launch | + | * Start re-planing due to unsuccessful launch or rejection from station. |
* Control of a potential violation of airspace and prohibited zones. | * Control of a potential violation of airspace and prohibited zones. | ||
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- | (?? dáta) Data on server are reloaded every 5 minutes with [[https:// | + | Scripts |
en/algorithms.1551107789.txt.gz · Last modified: 2019/02/25 15:16 by fluktuacia