diff --git a/include/nuttx/uorb.h b/include/nuttx/uorb.h
index f802458d06ea4..cd14a8bb30d34 100644
--- a/include/nuttx/uorb.h
+++ b/include/nuttx/uorb.h
@@ -914,6 +914,8 @@ struct sensor_gnss_satellite
 
   uint32_t constellation;
 
+  float cf;                 /* Carrier Frequency(Hz), GSV.signal_id */
+
   struct satellite
   {
     uint32_t svid;          /* Space vehicle ID */