气压高度滞后修正在试飞院从未进行过飞行试验，通常采用地面试验结果。介绍了首次采用ＧＰＳ差分进行气压高度延迟修正的飞行试验方法，为火控系统俯冲状态提供气压高度修正曲线。 Altitude Hysteresis Correction Flight tests have never been performed at the test flight and ground test results are usually used. This paper introduces the flight test method for the first time using GPS differential pressure altitude delay correction to provide pressure altitude correction curves for the state of subduction of the fire control system.