速度过滤优化

src/Data_Source/Data_Source.tsx

@@ -34,7 +34,7 @@ export class Data_Source extends enhance.Base {
     alt: number = 0;
     update_form_gps: boolean = false;
     aircraft_pixel_size: number = 20;
-    use_system_time: boolean = false;
+    ignore_msg_time: boolean = false;
 
     constructor() {
         super();

src/Data_Source/Data_Source_Show.tsx

@@ -71,6 +71,12 @@ export class Data_Source_Show extends enhance.Base {
                                                     this.flush();
                                                 }}>基站最大范围保持模式</Checkbox>
 
+                                                <Checkbox checked={ds.ignore_msg_time} onChange={(e: CheckboxChangeEvent) => {
+                                                    ds.ignore_msg_time = e.target.checked;
+                                                    ds.refresh();
+                                                    this.flush();
+                                                }}>忽略消息时间戳</Checkbox>
+
                                                 <br/>
 
                                                 <Checkbox checked={ds.show_icao}