The invention discloses a sea level height correction method for foresight terrain avoidance warning. The method comprises the following steps: acquiring the current onboard parameter information of an aircraft, the onboard parameter information at least comprising the current terrain clearance, the current speed, the current standard air pressure height and the current terrain height of the aircraft; determining whether the aircraft is in a ground state at present according to the current terrain clearance and the current speed; if the aircraft is in the ground state at present, determining a datum plane deviation value according to the current standard air pressure height and the current terrain height; and if the absolute value of the datum plane deviation value is smaller than the deviation value increment threshold value, correcting the sea level height value according to the current standard air pressure height and the datum plane deviation value. The method has the advantages that the deviation, caused by the temperature, of the datum plane between the measured height and the terrain database is corrected, so that the corrected height is obtained, and false alarms and missed alarms of foresight terrain avoidance alarms are reduced.
本发明公开一种用于前视地形回避告警的海平面高度修正方法,包含有以下步骤,获取飞机当前的机上参数信息,所述机上参数信息中至少具有关于飞机的当前离地高度、当前速度、当前标准气压高度及当前地形高度;由所述当前离地高度及所述当前速度确定飞机当前是否处于地面状态;若飞机当前处于地面状态,则由所述当前标准气压高度及所述当前地形高度确定基准面偏差量;以及,若所述基准面偏差量的绝对值小于所述偏差量增量阈值,则根据所述当前标准气压高度及所述基准面偏差量修正海平面高度值。本发明的优点在于:修正因温度原因造成的测量高度与地形数据库之间的基准面的偏差,从而获得修正高度,降低前视地形回避告警的虚警和漏警。
Sea level height correction method for foresight terrain avoidance warning
一种用于前视地形回避告警的海平面高度修正方法
2022-02-22
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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