The main requirement of this project is to be implementing
a reality application based on time difference of arrival. Create, develop and
make use of the tool to enhance human convenience.
Thus, it need to design a positioning system.
In this system, it may include L
1. receiver module
2. transmitter module
3. MCU or computer to do calculation
To find the position, it can need a shape signal pluse in different media, for example, sound, ultrasonic, light and radio.
The speed of sound: 343.2 m/s, Ultrasonic will transmit in 343.2 m/s.
The speed of light: 3 x 108 m/s. Radio waves will travel at the speed of light
For speed different, I will choose sound to be media in order to reduce positioning error.
In this stage, I still to find hardware unit to receive signal pulse,
The first attract thing is to record the audio signal and transform to computer. It may use USB Microphone for further experiment.
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