兩種修正的自適應(yīng)通道均衡方法
Two Methods of Modified Adaptive Channel Equalization
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摘要: 在常規(guī)雷達(dá)加裝的自適應(yīng)旁瓣相消(ASLC)系統(tǒng)中，天線至接收機(jī)前端饋線部分的相位不一致性通常不可忽略。而現(xiàn)有的自適應(yīng)通道均衡方法是在接收機(jī)前端注入校準(zhǔn)信號(hào)進(jìn)行均衡，只能對(duì)接收機(jī)的幅相不一致性進(jìn)行校正，對(duì)饋線部分的相位失配卻無能為力，因此影響了ASLC的對(duì)消性能。該文提出了兩種修正的自適應(yīng)通道均衡方法，它們能同時(shí)校正接收機(jī)與饋線部分的幅相不一致性。理論分析和實(shí)驗(yàn)結(jié)果驗(yàn)證了這兩種方法的有效性。
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關(guān)鍵詞:
- 雷達(dá);旁瓣相消;自適應(yīng)通道均衡;相位失配
Abstract: In the Adaptive Side Lobe Cancellation(ASLC) system of general radar, the mismatched phase of transmission line between the antenna and the former of the receiver can not be ignored usually. Otherwise, the existing method of adaptive channel equalization can only equalize the mismatched amplitude and phase of the receiver while it is disabled of the mismatched phase of the transmission line, because the reference signal is inputted in front of the receiver. Therefore the performance of ASLC is affected. Two methods of modified adaptive channel equalization are provided in this article. The mismatched amplitude and phase of the receiver and the transmission line can be revised at the same time by these two methods. The effect of them is proved with the theory analysis and experimental results. -
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