Beamforming_in_time_domain

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Beamforming_in_time_domain

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Constrain ray parameters and back-azimuth with array method.

Beamforming_in_time_domain 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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## NOTICE!!! THIS PROGRAM COMES WITH NO WARRANTY!!!
***

## I RECOMMEND THAT SOMEONE USE "F-K beamforming" in [fk-bf](https://github.com/geophydog/Beamforming_in_frequency_domain/) INSTEAD OF THIS ONE.
`The new beamforming package can be found at https://github.com/geophydog/Beamforming_in_frequency_domain`
***

## Beam-forming
- To constrain the back-azimuth and slowness of some seismic phase with seismic array

***

### Example
- This is an example and necessary files in the diretory "Example"

```
beamforming listfile 630 700 0.01 0.5 2 8 0.2 3 out.txt
```

# Dependencies
- Linux or Mac OS platform;  
-  SAC(Seismic Analysis Code, here version 101.6a)  
      - SAC is used to do bandpass filtering;
      - [Request for SAC](http://ds.iris.edu/ds/nodes/dmc/forms/sac/)
-  GMT(the Generic Mapping Tools, here version 5.3.1)  
      - GMT is used to plot the results after executing beam-forming.
      - [Download GMT](http://gmt.soest.hawaii.edu/projects/gmt/wiki/Download)
# Installation
- Just run "make" to compile and get the executable command "beamforming" in "src" source code directory .
# Usage
```
beamforming sacfile.lst t1 t2 fre_low fre_high slow_low slow_high slow_step baz_step  output_file 
```

| parameter |  mean |
| --------- | ----- |
| sacfile.lst| file containing names of SAC format files |
|     t1     |     begin time of doing beam-forming      |
|     t2     |     end time of doing beam-forming        |
|  fre_low   |low limitation of corner frequency of SAC files |
|  fre_high  |high limitation of corner frequency of SAC files |
|  slow_low  |low limitation of scanning horizontal slowness or ray parameter|
|  slow_high |high limitation of scanning horizontal slowness or ray parameter|
|  slow_step | step length of scanning horizontal slowness or ray parameter|
|  baz_step | step length of scanning back-azimuth |
| output_file | file name of outputting results |

# NOTICE!!!
- [x] Unit of slowness: second/degree;
- [x] Unit of back-azimuth: degree.
# Contribution
-  Author: Xuping Feng
- Email: geophydogvon@gmail.com

Beamforming_in_time_domain

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