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为适应当前无线通信强抗干扰能力、高数据传输速率的需求,设计并实现了一种适用于直扩/跳频(DS/FH)混合扩频通信系统在高速数据传输状态下的跳频捕获方法,并根据应用需要实现了高数据率下的编码扩频技术和高速直接数字频率合成技术,完成了系统的硬件实现与调试。实际测试表明,系统在一定的扩频增益和3000跳/秒的跳频速率下,传输数据速率大于1 Mb/s,满足工程应用需求。
In order to meet the demand of strong anti-jamming ability and high data transmission rate of current wireless communication, a frequency hopping acquisition suitable for DSSS / DSH hybrid spread spectrum communication system under high-speed data transmission is designed and implemented Method, and according to the application needs to achieve a high data rate coding spread spectrum technology and high-speed direct digital frequency synthesis technology to complete the system hardware implementation and debugging. Actual tests show that the system can transmit data at a rate of more than 1 Mb / s at a certain spreading gain and frequency hopping rate of 3000 hops / s, which meets the needs of engineering applications.