摘要
时差频差技术指标测试是系统性能评估的重要组成部分。搭建半实物仿真环境可模拟空间无线信道传播特性,对定位技术指标进行有效测试,同步技术在测试过程中起到至关重要的作用,直接影响时差、频差和定位精度的测试效果。通过分析比对现有同步方法,提出一种硬件同步和软件触发相结合的同步方法,并设计基于无线信道仿真仪的半实物仿真环境测试流程。试验表明,利用该方法能够很好对时差频差定位技术指标进行有效测试。
Testing of TDOA/FDOA indicators is the most vital part of system performance evaluation. Building semi-physical simulation environment can simulate the propagation characteristics of space wireless channel and can effectively test the location technical indicators before launching. Synchronization technology plays an important role in the testing process, which directly affects the accuracy of TDOA/FDOA indicators. By analyzing and comparing the existing synchronization methods, I proposed a synchronization method combining hardware synchronization and software triggering, and designed a semi-physical simulation environment based on wireless channel simulator. The application results show that the ground test system using this synchronization can effectively test TDOA/FDOA and location indicators.
作者
徐凡
Xu Fan(Southwest China Institute of Electronic Technology, Chengdu 610036,Sichuan, China)
出处
《计算机应用与软件》
北大核心
2019年第6期124-127,共4页
Computer Applications and Software
关键词
时差频差
定位
半实物仿真系统
地面测试
同步技术
TDOA/FDOA
Location
Semi-physical simulation
Ground test
Synchronization technology
