【摘要】 舰载直升机着舰周期指示器是一种被广泛应用于直升机着舰过程中的视觉辅助设备。本文介绍了着舰周期指示器的基本原理和作用，并回顾了其发展历程。从软硬件组成、能量指标算法两个方面论述了着舰周期指示器的具体实现方法。根据我国舰载直升机着舰技术的发展现状，论述了着舰周期指示器在我国的发展应用前景，为后续国内舰载直升机着舰辅助设备的发展提供了参考。更多还原

【Abstract】 Landing Period Designator(LPD) is a Visual Landing Aids(VLA) widely used in the process of helicopter landing. This paper introduces the principles and functions of LPD, and reviews its development process. The implementation method is described from two aspects of software and hardware composition and energy index(EI)algorithm. According to the development status of domestic shipboard helicopter landing technology, the development and application prospects of LPD in China are discussed providing a reference for the development of domestic shipborne helicopter landing auxiliary equipment.更多还原