gps tools chapter 1

TEKNIK GEOMATIKA – FAKULTAS TEKNIK SIPIL DAN PERENCANAANINSTITUT TEKNOLOGI SEPULUH NOPEMBER SURABAYA 2014

1. ZULFIKAR ADLAN NADZIR 35111000272. AKHMAD ARISANDY 3512100026 3. ELIYA NUR FADILA 35121000404. YUGIE NANDA PRANATA 35121000675. UMROH DIAN S. 35121000716. MUSDIYANA THALIF 3512100104

GPSTOOLS TUTORIAL1st Chapter:

INTRODUCTION

INTRODUCTION

1. This tutorial is explaining ‘how to’ operating basic operation of

GPSTOOLS.

2. In this tutorial, ‘how to’ operation will be explained with

reference to the actual operations, using typical applications of

this program.

3. This section will explaining the basic law and ‘how to’

operations, with some underlined comment and ‘must be

noted’ material.


BASIC CONFIGURATIONS

1. For system requirements, how to install tutorial, how to initialize

the program etc, see the memo and Install Notes.

If the program is already installed using the following

descriptions, the main menu will be displayed if we type

“gpstools” in Matlab’s command window.

Main Menu


BASIC CONFIGURATIONS (1)

2. To examine the details of the configuration and operation methods of the programs,

see Help. The Main menu of Help is accessible from Main Menu, with option to

access Settings menu. The Help browser is executable from Internet Browser, such as

Mozilla Firefox or Internet Explorer. Please enter executable file path in Internet

browser to specify which part of Help Browser you want to use. We can change

various things in Settings tab, such as font display, the setting of the text editor and

etc.


BASIC CONFIGURATIONS (2)

3. Close the screen by pressing “OK” button in “Settings” window. Run “Help….” Button to

make sure the Help is working properly.

4. This is the end of Basic Settings tutorial. If you change some values in that topic, they

will be loaded automatically the next time it’s runs because they already saved.


1st Example: Downloading Data for Analysis (1)


If you want to analyze various parameters in GPS, you should download it first. In this

example, we are downloading the following data to be used in some analysis, as listed

below:

• IGS Precise Calendar (IGS Final Orbit/Clock/ERP) File

• IGS Combined Navigation Message File

• IGS Observation Point Data

1. Please start the Main Menu

2. Run “Tools” and “Download…” Menu from the Main Menu, to access the Download

Window, like shown below



3. Choose “Data/Products (Source), then select data type “IGS EPH Final (CDDIS)”, “IGS

CLK (CDDIS)”, “IGS ERP Final (CDDIS)”. Then select Start-End Date/Time as you wish,

then set the Login User Anonymous. After that, set the Local Directory where you want

to store the Observation Data. If you want to get Ready-to-process file, tick the

“Unzip/Uncompact Files” options and “Skip Existing Files”.

4. After pressing “Download” button, the download process should started automatically.

The progress bar will appear. If you want to see the Log File of the Download process,

click “Log…” button. There, the status and list of downloaded files, including the address

of files will be displayed.



5. We are going to check the content of the Files using Management mode. Press

“Files….” Button, there will be listed the download destination directory table. You have

to make sure that the raw observation data is downloaded. If you want to check the

content of the Files, double click one file and you will find new window which is

showing the RINEX explanations of the File, including the Station Name, Ephemeris,

and essential information of that observation files.



6. After downloading the Observation Data, we should download

Navigation Message file. Select “Data/Product (Source) as

Observation Data, then select “IGS OBS Daily (CDDIS)” and “IGS

NAV COMB (CDDIS)”. After that, select the Station of

Observation you desired, by choosing “Stations…..”, then select

“Clear” button and choose one of the stations. In this tutorial,

choose TSKB (Tsukuba) as one of the receiver stations you want

to download, then click “OK” button.

7. After choosing the Stations, choose Download and the RINEX

data of Observation Data and Navigation Message will be

downloaded. Check the integrity of the Files by double-clicking

the Files.



7. Compressed or De-compressed RINEX File is not

important, especially if you’re using Hatanaka-type

files. If you have some questions about Compressing

and De-compressing, refer to Help section.

8. If you want to change the address of the Downloaded

Data, change it at the Download window, then re-start

the Downloading Window to make sure that the

address have changed. Refer to comments if you want

to check the definition file format and the contents of

the file.

Questions?

gps tools chapter 1

Engineering

main menu of help

settings menu

help browser

following data

end of basic settings

basic operation of gpstools

basic law

internet browser