scrab frequency of kf

yaml/scrab/processor_gnss.yaml

@@ -10,7 +10,7 @@ fix: false
 enu_map_fix_dist: 5
 keyframe_vote:
   voting_active: true
-  max_time_span: 0.5
+  max_time_span: 0.1
   min_features_for_keyframe: 0 #4
 gnss:
   sateph: 6    # satellite ephemeris/clock: EPHOPT_BRDC(0):broadcast ephemeris, EPHOPT_PREC(1): precise ephemeris, EPHOPT_SBAS(2): broadcast + SBAS, EPHOPT_SSRAPC(3): broadcast + SSR_APC, EPHOPT_SSRCOM(4): broadcast + SSR_COM, EPHOPT_LEX(5): QZSS LEX ephemeris, EPHOPT_SBAS2(6):broadcast + SBAS(sats with SBAS corr and sats with BRDC eph), EPHOPT_SBAS3(7):broadcast + SBAS(EPHOPT_SBAS if possible, otherwise EPHOPT_SBAS2), EPHOPT_SBAS4(8):broadcast + SBAS(EPHOPT_SBAS if possible, otherwise EPHOPT_BRDC)