摘要
针对水下自主定位系统的要求和水下环境的特殊性,为降低对检测水声定位信号的复杂度和资源消耗,得到实时、快速、准确的时延信息,对水声定位信号进行了基于频谱扩展原理的编码设计,并根据定位信号的特点,借鉴传统数字相关器的设计,利用VHDL语言设计实现了一种基于频谱扩展原理结构简单的数字相关器。仿真结果表明该数字相关器具有快速、准确、资源消耗低的特点,满足水下自主定位中的应用要求。
specific to requirement of underwater independent orientation system and the particularity of the underwater environment, in order to reduce complexity and consumption of resource in processing acoustic positioning signal, a acoustic positioning signal was designed, and underwater independent orientation of acoustic positioning signal characteristics, design a basic structure based on the spectrum extension principle of digital correlator by VHDL. The simulation results show that the digital correlator have virtues of rapid, accurate, low consumption of resources, meet the characteristics of underwater independent positioning the application requirements.
出处
《电子测试》
2011年第7期71-74,共4页
Electronic Test
基金
国防重点实验室基金项目(9140c1204051010)资助
关键词
水下自主定位
数字相关器
M序列
FPGA
underwater independent orientation
digital correlator
m sequence
FPGA
