Sonar is an application which uses sound to detect obstructions on the way. It uses the same physics like bats. Because application sends a short chirp with different frequencies it is insensitive for noise (the chirp is like a key, when the sound comeback to device, it compares the echo with the “key”). Sonar works in 3 modes: linear continuous, cumulative and angular. The linear one shifts the echo image with every new chirp. The cumulative one makes average from several scans for better precision. The last one uses magnetometer for device angular orientation. For maximum precision, the scale should be calibrated. The precision is about 10cm for 10m!). Additionally application has a test for frequency spectrum.
In this version:
-You can save images,
-Stability improved
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-Improved stability
Sonar is an application that uses sound to detect obstructions on the road. It uses the same physics as bats. Because the app sends out a short chirp with different frequencies, it is insensitive to noise (the chirp is like a key, when the sound returns to the device, it compares the echo to the "key"). The probe works in 3 modes: continuous linear, cumulative and angular. The linear changes the image of the echo with each new chirp. Cumulative averages multiple scans for better accuracy. The latter uses magnetometer for the angular orientation of the device. For maximum accuracy, the scale must be calibrated. The accuracy is about 10 cm by 10 m!). Also, the app has a frequency spectrum test.
