The chip hardware is similar, but the internal software plays a major role.
The so-called core technology of the third generation only improves the software
algorithm on the basis of the second generation, just like the formula used to
calculate the acceleration/speed in the physics class of junior and senior high
school, but when it comes to the derivative and integral in college Further
Mathematics to calculate the same acceleration/speed physics problem, the method
(algorithm) is different, and the time taken is greatly different, reflecting
the difference between middle schools and universities, just like the second
generation and the third generation. Secondly, the hardware also provides
quality standards.
The main functions of third-generation chip software:
3rd generation chip software upgrade: (1) Algorithm improvement to improve
search/positioning speed and time. (2) Improve anti-interference performance,
signal-to-noise ratio, and receive effective number of satellites through
software filters. (3) Some chips implement software DR trajectory prediction to
improve resistance to high buildings, tree shade, bridge occlusion, and tunnel
functions. (4) Soft channel search can increase the number of channels for
visible satellites (up to 12-24), allowing for continued positioning in case of
changes in personnel, vehicles, uphill and downhill movements, attitude changes,
and changes in the ephemeris status of aircraft and ships.
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