Multi-model compressing method for transmitting general aircraft longitude and latitude position data by beidou equipment
A general-purpose aircraft and compression method technology, applied in the field of multi-model compression and decompression, can solve the problems of low compression efficiency and achieve the effect of high compression efficiency and precise monitoring
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[0028] Example
[0029] Step 1: Determine the accuracy of the latitude, longitude and altitude data according to the actual situation, and cut the data according to the determined accuracy requirements;
[0030] Suppose the data is a floating point number, and the precision is M digits after the decimal point, then all M+1 digits (including M+1 digits) after the decimal point are discarded, and the data is enlarged by 10 after truncation M Convert to integer after multiple. Suppose the data used in this example is figure 1 As shown, where the latitude, longitude and height data are j k , W k , H k Said. In this embodiment, the precision of latitude and longitude is 5 digits after the decimal point, and the precision of the height is meter level, so the data after the 6th digit (including the 6th digit) in the latitude, longitude and altitude data can be considered unnecessary or inaccurate. Discard it. After truncation, expand the data of longitude, latitude and altitude by 10 5 ...
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