GAMP II - GOOD

GAMP II - GOOD (Gnss Observations and prOducts Downloader) is a powerful and easy-to-use lightweight GNSS observations and product downloading toolkit, which is developed by the SASIN (SpAtial SurveyIng and Navigation) group at Shandong University of Science and Technology (SDUST). The current version is 1.6, which is more stable. Hence, we decide to make it available for global GNSS users, and we are convinced that more and more GNSS users will benefit from GAMP II - GOOD. The source codes of GAMP II - GOOD is now available at GitHub (https://github.com/zhouforme0318/GAMPII-GOOD). We dedicated to create a more powerful GNSS data downloading tool, which can allow every GNSSer to completely get rid of the trouble in GNSS data and product downloading.

Features

Main feature of GAMP II - GOOD are various GNSS observations and products downloading, i.e.,

IGS observation (RINEX version 2.xx, short name 'd')
MGEX observation (RINEX version 3.xx, long name 'crx')
Curtin University of Technology (CUT) observation (RINEX version 3.xx, long name 'crx')
Geoscience Australia (GA) observation (RINEX version 3.xx, long name 'crx')
Hong Kong CORS observation (RINEX version 3.xx, long name 'crx')
various type of broadcast ephemeris
various type of precise orbit 'sp3' and precise clock 'clk'
earth rotation parameter
IGS weekly SINEX solution
CODE and/or MGEX differential code bias (DCB)
global ionosphere map (GIM)
rate of TEC index (ROTI)
CODE and/or IGS tropospheric product
real-time precise orbit and clock products from CNES offline files
real-time code and phase bias products from CNES offline files
ANTEX format antenna phase center correction
But it is not limited to these, users can use the source code to expand its functionalities according to their needs.

Version

Vers. 1.0
2021/04/16 new
2021/04/20 MGEX multi-GNSS precise products option added
Vers. 1.1
2021/04/23 IGN and WHU FPT archives added
2021/04/30 the day before and after the current day for precise satellite orbit and clock products downloading is added
Vers. 1.2
2021/04/30 CNES real-time orbit, clock, bias files (in offline mode) option added
2021/05/01 from DOY 345/2020, 'brdcDDD0.YYn' was converted from '.Z' to '.gz'
2021/05/01 added the full path of third-party softwares
Vers. 1.3
2021/05/05 add 'GetRoti' for rate of TEC index (ROTI) file downloading
Vers. 1.4
2021/05/06 add the compatibility for changing directory (chdir) in Windows and Linux OS
2021/05/07 add the option 'printInfoWget' in configure file for (not) printing the information of running 'wget'
2021/05/08 add IGS and MGEX hourly observation (30s) downloading
Vers. 1.5
2021/05/10 modify some codes to make GOOD adaptable to different compression form (i.e., '.Z' or '.gz')
2021/05/12 add the option for IGR, IGU, GFU (from GFZ), and WUU (from WHU) products as well as the site-specific broadcast ephemeris files downloading
2021/05/15 sub-directory (i.e., daily, hourly, and highrate) creation for observation downloading
Vers. 1.6
2021/05/18 modify some codes to make configuration file and program look more concise
2021/05/21 add the extraction and conversion for the 'all' option in IGS and MGEX observation downloading
Vers. 1.7
2021/06/01 add 'getObc', 'getObg', and 'getObh' options for Curtin University of Technology (CUT), Geoscience Australia (GA), and Hong Kong CORS observation downloading

Install

The source codes are written in ANSI C/C++, which are cross-platform and can be compiled on Windows, Linux/Unix and Mac OS. NOTE: Double-clicking the executable program does not work for data downloading. The correct way is to type ‘run_GAMP_GOOD gamp_good.cfg’ on the terminal.

How to use it

Please download GAMP II - GOOD Users Guide FROM https://github.com/zhouforme0318/GAMPII-GOOD/tree/master/Doc. The detailed description of how to use GAMP II - GOOD can be found in the document.

Attention!

If some GNSS data cannot be successfully downloaded, check your network first. Then, check if the file exists on the remote server. Finally, rerun ‘run_GAMP_GOOD gamp_good.cfg’ to try again. Don’t worry, once the data has been downloaded, it will not be downloaded repeatedly.

Acknowledgments

Dr Cheng Wang @ BUAA provided the C++ code for observation downloading as reference
the suggestion of adding the option of the day before and after the current day for precise satellite orbit and clock products downloading is provide by Zan Liu @ CUMT
the suggestion of adding the option of the full path of third-party softwares is provide by Dr Yudan Yi
the suggestion of adding the option of rate of TEC index (ROTI) is provide by Lei Liu @ WHU
the suggestion of adding the option of 'printInfoWget' in configure file for (not) printing the information of running 'wget' by Dr Hong Hu @ AHU
the suggestion of adding the option of IGR, IGU, GFU (from GFZ), and WUU (from WHU) products as well as the site-specific broadcast ephemeris is provide by Menghao Li @ HEU

xpli1997/GAMPII-GOOD