中文摘要：

罗兰-C系统与全球导航定位系统（GNSS）相结合已成为新的应用模式，为用户提供可靠的定位、导航和授时服务。针对传统罗兰-C接收机信号捕获时间长、抗噪性能差等缺点，该文提出一种基于延迟相关技术的罗兰-C信号抗噪快速捕获方法，并从理论分析和仿真实验两个方面验证了该方法的有效性，解决了强噪声背景下罗兰-信号的快速捕获问题。结果表明：罗兰-C延迟相关捕获方法的捕获时间优于200ms，抗噪性能优于10dB。

英文摘要：

The combination of Loran-C and Global Navigation Satellite System （GNSS） has become a new application mode, which provides reliable positioning, navigation and timing service for users. Based on the research on Loran-C signal system, considering its long signal acquisition time and poor anti-noise performance of Loran-C receiver, this paper proposes a new method of anti-noise and fast acquisition for Loran-C signal, which is based on delay correlation; and verifies the practicality of this method by theoretical analysis and carrying out simulation test. This method solves successfully the problem of fast acquisition of Loran-C signal in heavy noise environment. The result shows that the acquisition time of this method is less than 200 ms, the anti-noise property is less than -10 dB.