RadxDealias - Revision history

Jcdehart at 22:55, 5 May 2021

2021-05-05T22:55:35Z

Jcdehart: /* Running RadxDealias */

2021-04-09T20:30:27Z

Running RadxDealias

Jcdehart at 20:29, 9 April 2021

2021-04-09T20:29:44Z

Jcdehart at 20:29, 9 April 2021

2021-04-09T20:29:24Z

Jcdehart: Created page with "RadxDealias dealiases doppler radar data. === '''Overview''' === RadxDealias reads input radar data from a file, dealiases the velocity data, and writes the results to a fil..."

2021-04-09T20:18:51Z

Created page with "RadxDealias dealiases doppler radar data. === '''Overview''' === RadxDealias reads input radar data from a file, dealiases the velocity data, and writes the results to a fil..."

New page

RadxDealias dealiases doppler radar data.

=== '''Overview''' ===

RadxDealias reads input radar data from a file, dealiases the velocity data, and writes the results to a file.

=== '''Prerequesites''' ===

The following items are required:

* radar data (any Radx supported format, e.g., cfradial)
* Sounding data
* Parameter files for RadxDealias.

=== '''Parameter file''' ===

RadxDealias uses one parameter file that includes information about the files and dealiasing thresholds.

==== '''Ensure file is up to date''' ====

To obtain the default parameter file, use the following command:

<code lang="bash">/path/to/lrose/install/bin/RadxDealias -print_params > param_file_name</code>

If you already have a parameter file and simply want to check for (and add) updated parameters while retaining current parameters, use the following command:

<code lang="bash">/path/to/lrose/install/bin/RadxDealias -params orig_param_file_name -print_params > new_param_file_name</code>

===== '''Important parameters''' =====

Input params

* input_dem_parth: directory containing the elevation data
* input_data_format: specifies the format of the elevation data (examples provided in the parameter file)

Radar parameters

* radar_location: latitude, longitude, and elevation (ground elevation
** radar height in km) of the radar antenna
* radar_wavelength_cm: radar wavelength (cm)
* horiz_beam_width_deg: horizontal beamwidth (degrees)
* vert_beam_width_deg: horizontal beamwidth (degrees)
* gates: starting distance, gate spacing (km), and number of gates
* azimuths: starting azimuth, azimuth spacing (degrees), and number of azimuths
* elevations: starting elevation angle, angle spacing (degrees), and number of elevation angles

Output directory and file name

* output_dir: files will be written to this directory
* output_format: select the preferred file type (usually CFRADIAL)

=== '''Running RadxDealias''' ===

To check all command line options for RadxDealias, including debugging options and file paths, type the following command into a terminal.

<code lang="bash">/path/to/lrose/install/bin/RadxDealias -h</code>

Once your parameter file is complete, use a command similar to the following to run the application:

<code lang="bash">/path/to/lrose/install/bin/RadxDealias -params param_file_name</code>

← Older revision		Revision as of 22:55, 5 May 2021
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	RadxDealias reads input radar data from a file, dealiases the velocity data, and writes the results to a file.		RadxDealias reads input radar data from a file, dealiases the velocity data, and writes the results to a file.
		+
		+
		+	=== '''Scientific Background''' ===
		+
		+	For more information on the James and Houze 2001 algorithm that RadxDealias is based on, please refer [http://wiki.lrose.net/index.php/RadxDealias_James_and_Houze_2001 here].

← Older revision		Revision as of 20:30, 9 April 2021
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	<code lang="bash">/path/to/lrose/install/bin/RadxDealias -params param_file_name</code>		<code lang="bash">/path/to/lrose/install/bin/RadxDealias -params param_file_name</code>
		+
		+	The user can also specify the location of cfradial files in the following manner:
		+
		+	<code lang="bash">/path/to/lrose/install/bin/RadxDealias -f /path/to/cfradial/files/ -params param_file_name</code>

@@ Line 29: / Line 29: @@
 <code lang="bash">/path/to/lrose/install/bin/RadxDealias -params orig_param_file_name -print_params &gt; new_param_file_name</code>
-===== '''Important parameters''' =====
+==== '''Important parameters''' ====
 Data input

@@ Line 31: / Line 31: @@
 ===== '''Important parameters''' =====
-Input params
+Data input
-* input_dem_parth: directory containing the elevation data
+* input_dir: directory containing the data
-* input_data_format: specifies the format of the elevation data (examples provided in the parameter file)
+* mode: determines if the program waits for new files (REALTIME), moves through start and end times specified on the command line (ARCHIVE), or moves through list of files specified on the command line (FILELIST)
 Output directory and file name
 * output_dir: files will be written to this directory
-* output_format: select the preferred file type (usually CFRADIAL)