声光相关技术在电子战中的应用

介绍了声光相关技术原理及其在现代战争,特别是在电子战及扩频通信等方面的应用,比较了体波及其表面波、声光及声电技术在应用中的不同特点,并具体探讨了声光相关器应用子通信信号的解调及同步中的可行性,分析表明,声光相关技术是很有发展前景的一项技术,将越来越多地应用于各个不同的领域。     

机载电子设备搭接技术研究

针对机载电子设备装机时的搭接环节,对机箱主要搭接技术进行了研究。根据设备搭接目的和性能要求,给出了相应的设备-托架、托架-安装支架之间的搭接方法,模块-机柜、机柜-安装支架之间的搭接方法,以及设备的备份搭接方法,并指出了各种搭接方式的特点、优点和不足,为设备的研制和机上安装提供搭接技术支持。     

Adaptive suppression of passive intermodulation in digital satellite transceivers

For the performance issues of satellite transceivers suffering passive intermodulation interference,a novel and effective digital suppression algorithm is presented in this paper.In con trast to analog approaches,digital passive intermodulation (PIM) suppression approaches can be easily reconfigured and therefore are highly attractive for future satellite communication systems.A simplified model of nonlinear distortion from passive microwave devices is established in consid eration of the memory effect.The multiple high-order PIM products falling into the receiving band can be described as a bilinear predictor function.A suppression algorithm based on a bilinear poly nomial decorrelated adaptive filter is proposed for baseband digital signal processing.In consideration of the time-varying characteristics of passive intermodulation,this algorithm can achieve the rapidness of online interference estimation and low complexity with less consumption of resources.Numerical simulation results show that the algorithm can effectively compensate the passive intermodulation interference,and achieve a high signal-to-interference ratio gain.     

新一代机载悬挂物管理系统需求分析

针对当前悬挂物管理系统的局限性,结合国外先进战机悬挂物管理系统功能,对我国下一代机载悬挂物管理系统需求进行分析,从FC总线技术、开放式系统架构、多挂点混挂技术、悬挂发射装置控制技术、武器数据链技术5个方面进行了具体的描述,为悬挂物管理系统设计指明了方向.     

交流电子负载校准技术研究

介绍了交流电子负载的校准方法、校准设备和校准原理等。交流电子负载是对是各种交流电源、UPS电源测试和老化试验的主要设备之一,其各项参数指标的优劣对被测设备的检测及故障分析具有重要意义。研究了交流负载的恒定电压、恒定电流、恒定电阻和恒定功率等功能的校准方法和指标,并通过实际测试、校准进行了验证,对校准结果的不确定度进行了评定,校准结果表明本文的校准方法能够满足仪器的技术要求。     

电子技术基础课程研究型教学模式的探索与实践

本文首先阐明对培养学生创新意识培养的认识,然后讲述怎样结合电子技术基础课程的特点建立研究型教学模式,进而介绍丰富的教学实践,以及多层次、系列化和立体化的教材建设,最后说明教学效果。     

海洋环境下载人航天器电子设备防护技术

海南文昌发射场高温、高湿、高盐雾的气候条件以及由天津到海南长距离的海上运输给航天器电子设备的三防性能带来了挑战。文章首先对运输过程中高湿、盐雾和霉菌对航天器电子设备的影响进行了分析,然后对航天器电子设备的三防工艺及运输技术进行了研究,并提出了具有普遍适用性的三防措施,能够有效降低环境因素带来的不利影响。     

Shock protection of penetrator-based instrumentation via a sublimation approach

It is often necessary for space-borne instrumentation to cope with substantial levels of shock acceleration both in the initial launch phase, as well as during entry, descent and landing in the case of planetary exploration. Current plans for a new generation of penetrator-based space missions will subject the associated on-board instrumentation to far greater levels of shock, and ways must therefore be found to either ruggedize or else protect any sensitive components during the impact phase. In this paper, we present an innovative method of shock protection that is suited for use in a number of planetary environments, based upon the temporary encapsulation of said components within a waxy solid which may then be sublimated to return the instrument back to its normal operation. We have tested this method experimentally using micromachined silicon suspensions under applied shock loads of up to 15,000g, and found that these were able to survive without incurring damage. Furthermore, quality factor measurements undertaken on these suspensions indicate that their mechanical performance remains unaffected by the encapsulation and subsequent sublimation process.     

电子对抗有效载荷地面测试与评估技术

描述电子对抗有效载荷地面测试系统的设计内容,介绍了测试系统的主要组成、功能及测试工作原理,常有的测试项目、测试方法,载荷的数据整理、评估与分析等,为以后电子对抗载荷地面系统搭建提供参考借鉴作用。