共查询到19条相似文献,搜索用时 286 毫秒
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三维雷达探测威力范围仿真要求能够对雷达的电磁场景进行逼真的模拟,针对传统的雷达探测威力仿真方法不能动态显示的缺点,提出了一种基于STK仿真软件的动态可视化仿真方法。首先介绍了Matlab插件的功能及编程逻辑,然后分别对压制干扰条件下的雷达威力范围和干扰型无人机的飞行航迹进行了细致的数学建模,最后给出了动态可视化仿真的实现方法。该方法以STK为底层场景构建平台,通过Matlab插件在时域上采集雷达最大探测距离的边界数据,实现了动态的雷达三维探测威力范围的可视化。仿真结果表明,干扰机与目标雷达的距离越近压制效果越好,同时2部干扰机能够弥补单部干扰机进行干扰时的不足。仿真结果与理论分析具有一致性,验证了数学模型的正确性和仿真方法的有效性。 相似文献
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无人机分布式干扰是对抗新型防空雷达的有效手段,在电子对抗领域扮演着越来越重要的角色。基于雷达探测距离模型和干扰方程,建立了无人机分布式干扰下的雷达暴露区计算模型。通过仿真计算,得出了不同干扰条件下雷达探测区域的变化和特点,分析了分布式无人机压制干扰敌防空雷达系统的有效性。 相似文献
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多干扰机协同是组网雷达对抗的一种重要方法。针对多干扰机协同中面临的数据传输率、时效性等因素所引起的干扰资源管理问题,建立了基于中心控制协商和公约协商的干扰资源管理模型,并给出了相应的协同算法与仿真。仿真结果表明:两种方法在组网雷达对抗中均能取得良好的干扰效果及较低的漏威胁目标信号脉冲比例。其中,基于公约的Multi?agent协商在组网干扰资源管理方面具有更好的可行性,其效果优于基于中心控制协商的方法。 相似文献
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静态评估方法利用标校系统模拟目标回波信号,检验雷达系统对于固定RCS目标的最远探测距离。动态评估方法根据动态校飞时目标运动参数,估算目标RCS和回波信号强度,推算出雷达系统的最小检测信号能力。两者相结合的方法可以使得雷达威力评估结果更加科学可信。 相似文献
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《防务技术》2015,(1)
Active phased array antennas enhances the performance of modern radars by using multiple low power transmit/receive modules in place of a high power transmitter in conventional radars. Fully distributed phased array radars demand the distribution of various signals in radio frequency(RF) and digital domain for real time operation. This is normally achieved through complex and bulky coaxial distribution networks. In this work, we intend to tap the inherent advantages of fiber links with wavelength division multiplexed(WDM) technology and a feasibility study to adapt these links for radar applications is carried out. This is done by analysing various parameters like amplitude, delay, frequency and phase variation response of various radar waveforms over WDM links. This also includes performance evaluation of non-linear frequency modulation(NLFM) signals, known for better signal to noise ratio(SNR) to specific side lobe levels. NLFM waveforms are further analysed using pulse compression(PC) technique. Link evaluation is also carried out using a standard simulation environment and is then experimentally verified with other waveforms like RF continuous wave(CW), pulsed RF and digital signals. Synchronization signals are generated from this variable duty cycle digital signals during real time radar operation. During evaluation of digital signals, variable transient effects for different duty cycles are observed from an amplifier configuration. A suppression method is proposed to eliminate this transient effects. Further, the link delay response is investigated using different lengths of fiber spools. It can be inferred from the experimental results that WDM links are capable of handling various signals significant to radar applications. 相似文献
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