How to convert my binary (hex) data to latitude and longitude?

Question

I have some binary data stream which passes geo location coordinates - latitude and longitude. I need to find the method they are encoded.

4adac812 = 74°26.2         


        

Answer 1

I have reordered your data so that we first have 3 longitures and then 3 latitudes:

74.438085, 74.438338, 74.669105, 43.004605, 42.938628, 42.993772

This is the best fit of the hexadecimals i can come up with is:

74.437368, 74.439881, 74.668392, 42.993224, 42.961388, 42.982391

The differences are: -0.000717, 0.001543, -0.000713, -0.011381, 0.022760, -0.011381

The program that generates these values from the complete Hex'es (4 not 3 bytes) is:

int main(int argc, char** argv) {
    int a[] = { 0x4adac812, 0x4adaee12, 0x4ae86d11, 0x2b6059f9, 0x2a3c8df9, 0x2afd0efb };
    int i = 0;
    while(i<3) {
        double b = (double)a[i] / (2<<(3*8)) * 8.668993 -250.0197;
        printf("%f\n",b);
        i++;
    }
    while(i<6) {
        double b = (double)a[i] / (2<<(3*8)) *  0.05586007 +41.78172;
        printf("%f\n",b);
    i++;
    }
    printf("press key");
    getch();
}