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Fix timedomain transform (based on acd944d5fa by @erikkaashoek )

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cho45 2019-09-21 22:20:08 +09:00
parent e89c9bd6a7
commit 1120d5c33b
4 changed files with 70 additions and 45 deletions
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4
plot.c
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@ -702,12 +702,12 @@ trace_get_info(int t, char *buf, int len)
}
static float time_of_index(int idx) {
return 1.0 / (float)(frequencies[1] - frequencies[0]) / 128.0 * idx;
return 1.0 / (float)(frequencies[1] - frequencies[0]) / (float)FFT_SIZE * idx;
}
static float distance_of_index(int idx) {
#define SPEED_OF_LIGHT 299792458
float distance = ((float)idx * (float)SPEED_OF_LIGHT) / ( (float)(frequencies[1] - frequencies[0]) * 128.0 * 2.0);
float distance = ((float)idx * (float)SPEED_OF_LIGHT) / ( (float)(frequencies[1] - frequencies[0]) * (float)FFT_SIZE * 2.0);
return distance * (velocity_factor / 100.0);
}