NMEA GPS Simulator software

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Accelerometer and gyro static measurements
In this post I’ll try to investigate what signal is produced by WiTilt accelerometer/gyro controller when it is immovable, whether it is noisy or not. I placed WiTilt (3-axis accelerometer and gyro controller) on a table and collected data from it. I got 350 samples of raw x,y,z,r (accelerations along 3 axes and speed of [...]
Calculating tilt from acceleration
Here is the demonstration how tilt is calculated from acceleration. We assume here that 3-axes accelerometer experiences only 1g gravity acceleration. Now lets try to move the object. We can see that motion acceleration added to gravity leads to incorrect tilt calculations. Calculations I follow this formula for calculating angles of x and y axes: [...]
Circular buffer (virtual ring)
A circular buffer, cyclic buffer or ring buffer is a data structure that uses a single, fixed-size buffer as if it were connected end-to-end. As it is fixed-size buffer, when it is full it starts to overwrite the oldest stored items with new ones. The logic is that recent data is more important then old [...]

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How to broadcast NMEA via UDP?

Starting from v.4.0.5 GPS Generator PRO has an option to send simulated NMEA protocol via UDP. This article describes how to configure GPS Simulator to send UDP datagrams to specific host or broadcast (multicast) NMEA UDP within network.
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Where can I get NMEA examples?

Question: Hi! Currently I'm implementing NMEA protocol parser. Where can I get NMEA sentences examples to test my software?

Answer: You can use GPS Generator to generate NMEA sentences of required version.

Example of NMEA 0183 v2.3. output:

Use GPS without GPS receiver!

The GPS Generator PRO application is designed for providing assitance in developing, testing and debugging programs and equipment working with the NMEA-0183 protocol. This application can also be used for learning and testing navigation applications and equipment before purchasing.