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一、引言 连续计算命中点和连续计算投放点是现代空—地攻击最广泛应用的两种武器瞄准投放方法。精确的武器投放要求驾驶员适时地掌握标定目标和修正目标的时机,正确地判断目标相对飞机的位置,准确地操纵飞机,满足投放条件,当到达投放点时,及时地投下武器。这就需要导航攻击系统在截获、瞄准和攻击阶段能够精确地提供载机的位置和运动状态,目标的位置和运动状态以及使飞机和目标构成一定关系并给驾驶员提供操纵飞机投放武器的控制显示。飞机的有关信息包括经纬度、高度、速度、航向、姿态及其加速度等。它们是由机载导航系统及其它机上设备测量的。目标的位置是指目标相对于本机的位置,一般来说,是指目标相对本机的方位角、俯仰角和斜距。目标的速度和加速度是指目标相对于地理坐标系（即惯性空间）说的。所谓飞机和目标的一定关系就是投弹条件。这是指飞机在瞄准攻击过程中经操纵驾驶能够到达空间的某一点,在这一点,飞机即时投下的炸弹刚好落在目标上。 上述的投弹条件,可以有几种判定方法,一种是不考虑（即不需要测量）目标相对飞机的位置,只考虑飞机如果现在投弹的话,爆点落在什么地方。我们知道,炸弹离开飞机以后,它将按照投放时刻的飞机状态、投弹方式、炸弹的弹道特性、目标标高以及空气的?
I. INTRODUCTION Continuous calculation of hit points and continuous calculation of drop point is the most widely used modern air-to-ground attack targeting two weapons delivery methods. Precise weapon deployment requires the driver to grasp the timing of calibration and modification of the target in due time, correctly determine the position of the target relative to the aircraft, accurately control the aircraft and meet the delivery conditions, and when it reaches the delivery point, promptly drop the weapon. This requires that during the interception, aiming and attack phases, the navigation attack system accurately provides the position and movement of the carrier, the position and the movement of the target, and the control that controls the aircraft in relation to the target and provides the driver with weapons to manipulate the aircraft display. Aircraft related information including latitude and longitude, altitude, speed, heading, attitude and acceleration. They are measured by airborne navigation systems and other onboard equipment. The position of the target refers to the position of the target relative to the local, in general, the azimuth, pitch and slant of the target relative to the local. The speed and acceleration of the target refer to the target relative to the geographic coordinate system (ie, inertial space). The so-called plane and the target of a certain relationship is the bombing conditions. This refers to the point at which an aircraft can reach space by manipulating driving while aiming for an attack, at which point the bomb dropped immediately by the aircraft lands on the target. There are several ways to determine the conditions of the bombing described above. One is to consider the location of the target relative to the aircraft without considering it (ie, not measuring it), and only consider where the blast point falls when the aircraft is now bombed. We know that after the bomb leaves the plane, it will be based on the state of the aircraft at the moment of launch, the method of bombing, the trajectory of the bomb, the target altitude and the air?