Download my thesis

A Real Time Kinematic GPS System Via the Internet
10.4.5 Logging Rover Receiver Data
The LOG function was explained in two pages before.
Command:
LOG [port] [data] [ontime] [seconds]
Note for PRTKA:
Type = Positioning,
Trigger = ontime or onmark
10.4.6 Display Rover Location
When this button is pressed, the Rover location would be displayed in the table at
the bottom of the applet. It gets the data from the Rover receiver:
Figure 10.4 - A sample of the logged data from the Rover receiver
By using the Java Communication package (javax.comm), the RS-232 serial
communications port which is a low-level made available by the underlying system.
SerialPort defines the required functionality for serial communication ports. This
applet reads the logged data from the serial port and converts them into type
String. By using array, it then selects the useful information and displays them in
the table.
There are two ways this button can work:
-
Displaying logged data from COM1 or COM2 in real time
-
Displaying logged data from a file which has been saved
58