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1.发明公开Method for constructing a microwave system and for correlation processing of its signals 失效用于构建微波系统及其相关信号处理的方法
公开(公告)号：EP0168335A3
公开(公告)日：1986-06-04
申请号：EP85440041
申请日：1985-06-12
CPC分类号： G01S11/02 , G01P3/803 , G01P3/806 , G01S13/605
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2.发明公开Doppler-type projectile velocity measurement and communication apparatus, and method 失效多普勒型项目速度测量与通信设备及方法
公开(公告)号：EP0023365A3
公开(公告)日：1981-04-22
申请号：EP80104551
申请日：1980-07-31
申请人： ARES, Inc.
摘要： Projectile velocity measurement and communication apparatus comprises a microwave probe fixed to a projectile barrel near a muzzle end. An osciliator, having reference frequency selected for exciting a fundamental electromagnetic mode in the barrel, is connected to the probe through a hybrid mixer configured for extracting, from moving projectile-reflected microwaves, a true Doppler signal having a varying frequency related to projectile barrel velocity. A processor, connected for receiving the Doppler signal, measures, by a clock oscillator, Doppler signal periods (half periods). A data presorter in the processor selects a last "N" number of period measurements before the projectile reaches an interference position relative to the probe, to be fed to a fire control computer interface for determination therein of projectile barrel and muzzle velocities, calibration means being provided to update barrel diameter values used in such determination. An alternative, dual reference fre- , quency variation is described, in which a dual hybrid mixer provides two independent Doppler signals, to eliminate dependency of projectile velocity determinations on barrel diameter. A reference frequency modulator and control means therefor are provided to enable microwave communication of information to the projectile, for example, of projectile target time of flight for fusing purposes. Corresponding methods for projectile velocity measurement and communication are provided.
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