雷达频率源自动测试系统软件设计

雷达频率源是现代雷达系统中非常重要的组成部分,主要介绍了雷达频率源自动测试系统软件设计方案,针对系统的硬件组成、测试原理、软件开发以及开发的关键技术进行了探讨。着重介绍了以VB软件为平台,基于GPIB和LAN口通信的自动测试系统软件设计技术。经过实际应用证明,该软件具有良好的通用性,自动化程度高,真正实现了仪表参数的自动设置、数据自动采集、测试结果自动存储等多项功能,减少人工干预,有效提高了雷达频率源测试效率和产品质量,充分满足雷达产品的测试需求。

RLS and LMS blind adaptive multi-user detection method and comparison in acoustic communication

RLS and LMS blind adaptive multi-user detection algorithm and multi-user detector was proposed to solve the problem of multi-user signal detection problem encountered in underwater acoustic communication networks. In simulation analysis, RLS and the LMS blind adaptive multi-user detector were designed and tested for synchronous and asynchronous multi-user communication process. The results of SIR comparison and MMSE comparison show that, both of the two methods can realize blind adaptive detection when any user change in multi-user communication, during this process, the training communication sequences are not needed. The RLS algorithm has about 5dB higher in SIR compared with LMS algorithm, and the convergence velocity of RLS algorithm is also higher than LMS algorithm when the communication users change. RLS algorithm has better ability in multi-user detection than that of LMS algorithm, and it has great attraction and guiding significance for solving the problem of multiple access interference (MAI) in multi-user communication.