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本文论述再入飞行器末制导的鉴定和试验中所遇到的技术因素,并专门叙述了目前潘兴Ⅱ计划中所用的建立静态试验环境的方法,此试验环境精确地模拟了以各种各样的实际目标为背景的再入条件。鉴定中的制导技术包括惯性法和惯性系统与雷达区域相关相结合的方法。 所研究的系统使用为特定目标区域绘制的预存地形图。在再入段,实时雷达特征信号与预存图相关,因而可确定飞行器位置的精确误差数据。弹上数字计算机用这些“修改了的”位置数据校正中段惯性导航阶段所累积的误差,从而进行飞行器终端控制,其精度比纯惯性制导所达到的要高得多。 试验台技术需要有试验飞行器上的连续实时三维位置数据。这是通过在目标区域中设置C波段测距系统和使用制导计算机剩余容量来实现的。因而,位置数据的连续计算所能达到的精度足可作为所鉴定系统的校正基准。其它特殊性能包括能以足够的能见度对飞行过程进行弹上录象(带宽可达6兆赫)和脉冲控制调制记录,以便有可能在地面试验中进行飞行后“再现”。 在飞行试验系列中采用了旋翼和固定翼两种试验台。最初的飞行试验是在CH—47直升飞机上进行的,目的是测量固定高度上航向和目标改变时的性能。高空飞行是用FJ4B喷气式飞机从离地面40000英尺处以45°—90°的角俯冲飞行完成的。迄
This article discusses the technical aspects of the identification and testing of reentry missiles and specifically describes the methods used to establish the static test environment currently used in the Pershing II project. The test environment accurately simulates a variety of The actual goal of re-entry conditions for the background. Guidance techniques in identification include methods of combining inertial and inertial systems with radar area correlations. The system under study used a pre-stored topographic map of a particular target area. In the reentry segment, the real-time radar signature is correlated with the pre-stored map, thus allowing accurate error data to be determined for the position of the aircraft. The onboard digital computer corrects the accumulated error in the mid-stage inertial navigation phase with these “modified” position data for aircraft end-point control with much higher accuracy than purely inertial guidance. Test bed technology requires continuous real-time three-dimensional position data on the test aircraft. This is achieved by setting up a C-band ranging system in the target area and using the guidance computer’s remaining capacity. Therefore, the accuracy achieved by the continuous calculation of the position data can be used as the calibration reference of the identified system. Other special features include video recording of up to 6 megahertz (MHz) and pulse-controlled modulation recording of the flight with sufficient visibility so that it is possible to “fly back” after the flight in ground trials. Flight test series used in the rotor and fixed wing two test stand. The initial flight test was conducted on a CH-47 helicopter to measure the performance at heading and target changes at a fixed altitude. Flying at high altitude is done with an FJ4B jet aircraft flying at an angle of 45 ° -90 ° from 40,000 feet above ground. until