【摘要】 介绍了一种基于Xilinx公司的FPGA(Spartan2 XC2S200)和TI公司的DSPTMS320VC5410设计的直接序列扩频接收机。对PN码的捕获,来取了一种门限自适应控制的双积分滑动相关捕获方法,既大大节省了FPGA的硬件设计资源,又能使PN码的平均捕获时间足够小。经实验测试,该系统各参数完全达到设计要求。更多还原

【Abstract】 A digital DSSS receiver is introduced in this paper, which is designed with FPGA Spartan2 XC2S200 of Xilinx company and DSP TMS320VC5410 of TI company. For acquisition, we presents a method of double dwells serial - search DS acquisition with adaptive threshold. It not only saves much hardware resource, but also can have a short period of acquisition. This device had already passed all tests.更多还原