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-rw-r--r--geoid.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/geoid.c b/geoid.c
index fc74e5df..c267e9c0 100644
--- a/geoid.c
+++ b/geoid.c
@@ -119,10 +119,23 @@ void ecef_to_wgs84fix(struct gps_fix_t *fix, double *separation,
-vx * sin(phi) * cos(lambda) - vy * sin(phi) * sin(lambda) +
vz * cos(phi);
veast = -vx * sin(lambda) + vy * cos(lambda);
+
fix->climb =
vx * cos(phi) * cos(lambda) + vy * cos(phi) * sin(lambda) +
vz * sin(phi);
+ /* sanity check the climb, 10,000 m/s max will do */
+ if ( 9999.9 < fix->climb )
+ fix->climb = 9999.9;
+ else if ( -9999.9 > fix->speed )
+ fix->climb = -9999.9;
+
fix->speed = sqrt(pow(vnorth, 2) + pow(veast, 2));
+ /* sanity check the speed, 10,000 m/s max will do */
+ if ( 9999.9 < fix->speed )
+ fix->speed = 9999.9;
+ else if ( -9999.9 > fix->speed )
+ fix->speed = -9999.9;
+
heading = atan2(fix_minuz(veast), fix_minuz(vnorth));
if (heading < 0)
heading += 2 * GPS_PI;