FAST （Fusion Abundant multi-Source data download Terminal）

####Introduce FAST Aiming at the problems of cumbersome steps and slow download speed of GNSS data, a relatively complete set of integrated multi-source data download terminal software fast is developed.
The software contains most of the data sources required in the process of GNSS scientific research and learning. The way of parallel download greatly improves the efficiency of download.

Git

Software features

Multi platform: Support both windows and Linux systems;
Abundant Resources: It basically includes the data sources required in GNSS scientific research and learning. At present, it supports 17 categories and 96 subcategories. See the specific Data support;
Fast: The software adopts parallel download mode, and the number of download threads can be specified in the command line parameter operation mode. After testing, it only takes 48.93s to download the 100 days BRDC+IGS+CLK file!
Easy to expand: If you need to support more data sources, you can specify the required data and data sources in FTP_Source.py and GNSS_TYPE.py;
Easy to run: The program can be downloaded in two ways: boot download mode and terminal input mode with parameters. Run the program directly to enter the boot download mode. Run FAST -h on the terminal with parameters to view the introduction of operation mode with parameters;
Flexible: In the operation mode with parameters, users can flexibly specify the download type, download location, download time, whether to decompress, number of threads, etc., and can write scripts such as bat, shell and python to run according to their own needs;
Portable: the windows package is only 18.9 MB, and the Linux package is only 6.63 MB

Installation tutorial

Windowsyou only need to unzip the package to run directly, enter FAST.exe -h can view the introduction of operation mode with parameters;
Linuxyou only need to unzip the package to run directly：After installation, as under Windows system, you can directly run the program or configure the program to environment variables.

Instructions

Boot Download Mode: In Windows system, click run fast Exe can enter the boot download. If it is a Linux system, the terminal can enter FAST to run;

Take downloading the multi system precise ephemeris of Wuhan University as an example, select SP3 in the primary selection directory, enter 2 and press enter；
Select MGEX_WUH_SP3 is input 6 and enter, where MGEX represents multi system GNSS, WHU represents Wuhan University, IGS data processing center and SP3 represents precision ephemeris;
Enter the time according to the prompt and press enter to complete the input;
After the download is completed, press enter directly according to the prompt to complete the decompression, or press enter without decompression;
Enter y or exit again according to the prompt;

Terminal input mode: In Windows system, run FAST.exe -h in CMD or power shell software to view the help. If it is a Linux system terminal, enter FAST -h to view the help;

  FAST : Fusion Abundant multi-Source data download Terminal
  ©Copyright 2022.01 @ Chang Chuntao
  PLEASE DO NOT SPREAD WITHOUT PERMISSION OF THE AUTHOR !

  Usage: FAST <options>

  Where the following are some of the options avaiable:

  -v,  --version                   display the version of GDD and exit
  -h,  --help                      print this help
  -t,  --type                      GNSS type, if you need to download multiple data,
                                   Please separate characters with " , "
                                   Example : GPS_brdc,GPS_IGS_sp3,GPS_IGR_clk
  -l,  --loc                       which folder is the download in
  -y,  --year                      where year are the data to be download
  -o,  --day1                      where first day are the data to be download
  -e,  --day2                      where last day are the data to be download
  -m,  --month                     where month are the data to be download
  -u,  --uncomprss Y/N             Y - unzip file (default)
                                   N - do not unzip files
  -f,  --file                      site file directory,The site names in the file are separated by spaces.
                                   Example : bjfs irkj urum
  -p   --process                   number of threads (default 12)

  Example: FAST -t MGEX_IGS_atx
           FAST -t GPS_brdc,GPS_IGS_sp3,GPS_IGR_clk -y 2022 -d 22 -p 30
           FAST -t MGEX_WUH_sp3 -y 2022 -d 22 -u N -l D:\code\CDD\Example
           FAST -t MGEX_IGS_rnx -y 2022 -d 22 -f D:\code\cdd\mgex.txt
           FAST -t IVS_week_snx -y 2022 -m 1

Supported Data

BRDC : GPS_brdc / MGEX_brdm
SP3 : GPS_IGS_sp3 / GPS_IGR_sp3 / GPS_IGU_sp3 / GPS_GFZ_sp3 / GPS_GRG_sp3 /
MGEX_WUH_sp3 / MGEX_WUHU_sp3 / MGEX_GFZR_sp3 / MGEX_COD_sp3 /
MGEX_SHA_sp3 / MGEX_GRG_sp3 / GLO_IGL_sp3 / MGEX_WUH_Hour_sp3
RINEX : GPS_IGS_rnx / MGEX_IGS_rnx / GPS_USA_cors / GPS_HK_cors / GPS_EU_cors /
GPS_AU_cors / MGEX_HK_cors
CLK : GPS_IGS_clk / GPS_IGR_clk / GPS_IGU_clk / MGEX_GFZR_clk / GPS_GRG_clk /
GPS_IGS_clk_30s / MGEX_WUH_clk / MGEX_COD_clk / MGEX_GFZ_clk / MGEX_GRG_clk /
WUH_PRIDE_clk /MGEX_WUHU_clk / MGEX_WUH_Hour_clk
ERP : IGS_erp / WUH_erp / COD_erp / GFZ_erp/ IGR_erp/ WUHU_erp / WUH_Hour_erp
BIA : MGEX_WHU_ABS_bia / MGEX_WHU_OSB_bia / GPS_COD_bia / MGEX_COD_bia /
MGEX_GFZ_bia
ION : IGSG_ion / IGRG_ion / WUHG_ion / WURG_ion / CODG_ion / CORG_ion / UQRG_ion
UPRG_ion / JPLG_ion / JPRG_ion / CASG_ion / CARG_ion / ESAG_ion / ESRG_ion
SINEX : IGS_day_snx / IGS_week_snx / IVS_week_snx / ILS_week_snx / IDS_week_snx
CNES_AR : CNES_post / CNES_realtime
ATX : MGEX_IGS_atx
DCB : GPS_COD_dcb / MGEX_CAS_dcb / MGEX_WHU_OSB / P1C1 / P1P2 / P2C2
Time_Series : IGS14_TS_ENU / IGS14_TS_XYZ / Series_TS_Plot
Velocity_Fields : IGS14_Venu / IGS08_Venu / PLATE_Venu
SLR : HY_SLR / GRACE_SLR / BEIDOU_SLR
OBX : GPS_COD_obx / GPS_GRG_obx / MGEX_WUH_obx / MGEX_COD_obx /
MGEX_GFZ_obx / MGEX_WUHU_obx
TRO : IGS_zpd / COD_tro / JPL_tro / GRID_1x1_VMF3 / GRID_2.5x2_VMF1 / GRID_5x5_VMF3
SpaceData : SW_EOP

Participation and contribution

Dr. Chang Chuntao @WuHan University
Program design/ Program writing/ Document writing/ Program testing/ Program maintenance
Pd. Jiang Kecai@WuHan University
Program idea / parallel computing processing idea
Dr. Mu Renhai@WuHan University
Program design/ program testing/ Documentation
Dr. Li Bo @Liaoning Technical University&China Academy of Surveying and mapping
Program testing/ Documentation/ Download node summary
Li Yongxi @Lanzhou Jiaotong University&China Academy of Surveying and mapping
Program testing/ Download node summary
Cao Duoming @Shandong University of Science and Technology&China Academy of Surveying and mapping
Program testing/ Download node summary

常春涛/FAST