diff --git a/data_process_class_dll/parameters.h b/data_process_class_dll/parameters.h
index f0eabb3..1dd035c 100644
--- a/data_process_class_dll/parameters.h
+++ b/data_process_class_dll/parameters.h
@@ -57,7 +57,8 @@
 #define TRACK_QUALITY_SNR_WEIGHT 0.3
 #define TRACK_QUALITY_LEN_WEIGHT 0.2
 #define TRACK_QUALITY_ITER_COEFF 0.8
-#define TRACK_QUALITY_DECREASE_COEFF 0.005
+#define TRACK_QUALITY_DECREASE_COEFF_O2 -0.0008
+#define TRACK_QUALITY_DECREASE_COEFF_O1 -0.0025
 
 //航迹起批质量条件
 #define TRACK_START_QUALITY_L3 0.7
@@ -67,17 +68,8 @@
 #define TRACK_START_QUALITY_L7 0.3
 
 //航迹消批质量条件
-#define TRACK_DIE_QUALITY_E4 0.3
-#define TRACK_DIE_QUALITY_E5 0.4
-#define TRACK_DIE_QUALITY_E6 0.5
-#define TRACK_DIE_QUALITY_E7 0.6
-#define TRACK_DIE_QUALITY_E8 0.7
-
-#define TRACK_DIE_QUALITY_PRAMARY_E6 0.3
-#define TRACK_DIE_QUALITY_PRAMARY_E7 0.4
-#define TRACK_DIE_QUALITY_PRAMARY_E8 0.5
-#define TRACK_DIE_QUALITY_PRAMARY_E9 0.6
-#define TRACK_DIE_QUALITY_PRAMARY_E10 0.7
+#define TRACK_DIE_QUALITY 0.3
+#define TRACK_DIE_QUALITY_PRAMARY 0.3
 
 #ifdef MECHANICAL_SCANNING
 /******************************机扫数据处理参数**************************************/
diff --git a/data_process_class_dll/track_asso.cpp b/data_process_class_dll/track_asso.cpp
index 587cb14..9f83f48 100644
--- a/data_process_class_dll/track_asso.cpp
+++ b/data_process_class_dll/track_asso.cpp
@@ -793,21 +793,24 @@ void Track_Asso:: model_filter(std::vector <Trust_Track> *trust_track,struct  Ra
 				(*trust_track)[i].circle_id++;
 				(*trust_track)[i].T_track = static_cast<long long>((*trust_track)[i].T_track+delta_T*1000.0);            //更新航迹时间
 				(*trust_track)[i].GNSS_time = static_cast<long long>((*trust_track)[i].GNSS_time+delta_T*1000.0);            //更新航迹时间
-				(*trust_track)[i].Unupdated_time += static_cast<long long>(delta_T*1000.0);
 				(*trust_track)[i].Extrapolate_round =(*trust_track)[i].Extrapolate_round+1;     //连续未用实点更新时间
 				(*trust_track)[i].point_flag=0;                            						//虚点
 				(*trust_track)[i].Track_Update_Flag = 1;										//航迹更新标志
 			}else{
 				(*trust_track)[i].Extrapolate_round =(*trust_track)[i].Extrapolate_round+1;     //连续未用实点更新时间
-				(*trust_track)[i].Unupdated_time += static_cast<long long>(delta_T*1000.0);
 				(*trust_track)[i].point_flag=0;                            						//虚点
 				(*trust_track)[i].Track_Update_Flag = 0;										//航迹更新标志
 			}
 
 			//航迹质量递减
-			(*trust_track)[i].Quality -= (*trust_track)[i].Unupdated_time / 1000.0 * TRACK_QUALITY_DECREASE_COEFF;
+			double t = (*trust_track)[i].Unupdated_time / 1000.0;
+			(*trust_track)[i].Quality -= t * t * TRACK_QUALITY_DECREASE_COEFF_O2 + t * TRACK_QUALITY_DECREASE_COEFF_O1;
+			(*trust_track)[i].Unupdated_time += static_cast<long long>(delta_T*1000.0);
+			t = (*trust_track)[i].Unupdated_time / 1000.0;
+			(*trust_track)[i].Quality += t * t * TRACK_QUALITY_DECREASE_COEFF_O2 + t * TRACK_QUALITY_DECREASE_COEFF_O1;
 			(*trust_track)[i].Quality = (*trust_track)[i].Quality < 0.0 ? 0.0 : (*trust_track)[i].Quality;
 			(*trust_track)[i].Point_sum = (*trust_track)[i].Point_sum + 1;
+			
 		}
 	}
 }
diff --git a/data_process_class_dll/track_die.cpp b/data_process_class_dll/track_die.cpp
index 5e893fe..26e33c1 100644
--- a/data_process_class_dll/track_die.cpp
+++ b/data_process_class_dll/track_die.cpp
@@ -23,7 +23,7 @@ void Track_Die::track_die_process( std::vector <Trust_Track> *trust_track,
 		}
 
 		//非重点航迹自动消亡
-		if((*Iter).Track_Mode == 0 && (*Iter).primary_target_flag == 0 && (*Iter).Extrapolate_round > TRACK_DIE_ROUND)
+		if((*Iter).Track_Mode == 0 && (*Iter).primary_target_flag == 0 && (*Iter).Quality < TRACK_DIE_QUALITY)
 		{
 			die_flag = true;
 		}