Combination-Correlator Technology for Improving Detection Capability of Multi-Highlight Targets
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摘要: 为了提高鱼雷自导捕获和识别低反射强度目标的能力，分析了时域压缩副本相关器的工作原理，并基于时域压缩副本相关器，采用多亮点信息的累加和相乘来进一步提高处理增益和亮点参量估计精度，提出了双通道时域压缩副本与回波联合相关器技术和双通道时域压缩副本与回波相关联合乘法器技术，并对这2种方法进行了深入的理论分析和仿真。仿真结果表明，与时域压缩副本相关器相比这2种方法能提高3 dB的处理增益，同时亮点参量估计精度也能得到明显改善。经鱼雷自导实航试验验证了该技术的有效性和实用性。Abstract: Addressing the problems in detecting weak echo targets by torpedo homing system , we analyze the working principle of time domain compression repetition correlator. By adopting the correlator, process gain and highlight parameter estimation precision are improved by accumulating and multiplying multi-highlight information. Double-channel time domain compression repetition and echo combination-multiplier technology and double-channel time domain compression repetition and echo combination-correlator technology are proposed, and corresponding theoretical analysis and simulation are performed. Simulation results indicate that the two technologies can raise 3 dB process gain compared with the time domain compression repetition correlator, and the estimation precision of highlight parameters is also improved. The validity and practicality of the proposed methods are verified by real-running test of torpedo.
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Key words:
- torpedo homing system /
- highlight /
- repetition correlator /
- parameter estimation /
- target identification
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