NTRIP Client for Android - Help
Display Settings
Background Color - There are two color schemes: black background with white text (the default) or a white background with black text. Many NTRIP users work outside where direct sunlight makes a screen harder to see. White and black provide a high contrast display to improve visibility in bright conditions.
Info Boxes - Some people like to see a specific part of the data coming from your GPS receiver. For example, if you're using RTK, you may be interested in the age of the correction data. If you're doing surveying, maybe the current elevation is what you want to see. The Info Boxes allow you to display a specific type of data on the screen where it is always in the same spot. Select the type of data from the list.
Show info boxes 3 and 4 - If you want more data on the screen, you have the option to add two more Info Boxes.
Keep Screen On - If this is enabled, your display will not dim and turn off when it is idle. This setting only affects the device when this application is running.
Audio Alert on Fix Change - When this is enabled, you will hear the notification sound when the type of solution changes. For example, if you go from RTK to Float-RTK or from DPGS to RTK.
Receiver Settings
Bluetooth Connection Method - There are several ways to use serial over Bluetooth, some of which don't work on certain devices. This option allows you to try different connection methods if you're having trouble with one. If the default connection method works fine, don't change it.
Auto-Enable Bluetooth - When this is enabled, if Bluetooth is turned off on your device, this app will try to enable Bluetooth when you connect.
Auto-Configure Receiver - This option allows you to have this application configure the receiver to do something upon connection. The pre-populated options are various configurations for NovAtel receiver.
Auto-Config Commands - If you have a non-NovAtel receiver, you can use this line to send a sequence of characters to the receiver upon connection.
Save GPS Data to File - If you want to save the NMEA GPS data coming from your receiver to a file.
Save NTRIP Data to File - If you want to save the correction data coming from your NTRIP caster to a file.
GPS Mock Locations - This will allow you to broadcast your high-accuracy position data to other applications on your Android device. Note that you need to have Mock Locations enabled under your Device Settings, Developer Options.
Internal UDP Port - This is a rarely used way to pipe correction data to the device's internal GPS receiver. The functionality existed in development hardware, but I don't think any production devices support this.
NTRIP Settings
Network Protocol - You can connect to either a plain old raw TCP/IP socket, or to a NTRIP caster.
Caster IP - This is the IP address of the NTRIP caster you want to connect to. Get this from whoever manages the NTRIP Caster.
Caster Port - This is the port number of the NTRIP caster you want to connect to. Get this from whoever manages the NTRIP Caster.
Data Stream - When you first connect to a caster, you will get a list of available data streams. This is how you select which stream you want to use.
Reported Location - Some NTRIP casters need to know your location before they send correction data to you. If your external receiver cannot output GGA messages for some reason, you need an alternate way to reporting a position to the caster. This allows you to report either a manually entered Latitude/Longitude or the location from your device's regular Location Manager Service which uses either an internal GPS receiver or a Wi-Fi/Cellular network for positions.
Premium Features - This is new as of December 2015. All of the same core NTRIP functionality is still free, but having high-accuracy position data available to the app allows for some other useful ways of displaying the data.
Premium Subscriptions - The cost to use premium features is $10 per year. Billing is handled through the Google Play store. There is a 7 day free trial if you want to see if these features are useful to you.
Display Units - Use whatever units you are most comfortable using - Meters down to the centimeter, Feet down to the hundredth of a foot, or Feet and Inches down to the tenth of an inch.
Enable Grade Control - The grade control display allows you to record the elevation at some location and use that as a reference point. As you drive around, the display will show you how far you are above or below that reference point. To access the grade control display, go to the main screen and tap on the bottom half of the screen where the connection log is. Hint: To change the settings for grade control, press and hold on the grade control display.
Grade Control Surface Type - Choose between a level surface or a sloped surface. If you're working on a project that needs slope for water to drain, you want to select the sloped surface mode. If you're leveling dirt to construct a building, you want to select the level surface mode. Note that if you are in sloped surface mode and specify a slope of 0 percent, you'll essentially have a level surface.
Grade Control Arrow Deadband - This is the tolerance for how when the up and down arrows are displayed. If you specify a deadband of 1 inch, then the arrows will be off as long as you are within 1 inch of the target elevation. The level of tolerance you set depends on how accurate your receiver is and what the project requires.
Enable Tape Measure - The tape measure display allows you to record a location and use that as a reference point. As you drive around, the display will show you the distance and angle relative to that reference point. Access and configure the tape measure display the same way you access the grade control display.
Tape Measure Display Mode - Choose the way the distance data will be displayed. The default is Distance, Heading, Elevation, Slope. The other option is Easting, Northing, Z which reports the distance in an X/Y/Z coordinate system.
Enable Grid Navigation - The grid navigation display allows you to navigate to the nearest point of a grid. You can set the origin of the grid, heading (orientation of the rows), spacing between points in a row, and spacing between rows. An example of where this would be used is planting trees in an orchard.
Grid Pattern - You can choose to have either a Rectangular or Hexagonal pattern. On a Hexagonal pattern, odd number rows will be offset by 1/2 of the spacing between points.
Grid Navigation Display Mode - You can choose to have the top of the display always be North, or to have the top of the of the display be your direction of travel based on the estimated vehicle heading.