东南大学学报（自然科学版）
東南大學學報（自然科學版）
동남대학학보（자연과학판）
JOURNAL OF SOUTHEAST UNIVERSITY
2014年
4期
692-696
,共5页
二次监视雷达%扩展二元相移键控%测速%频偏
二次鑑視雷達%擴展二元相移鍵控%測速%頻偏
이차감시뢰체%확전이원상이건공%측속%빈편
secondary surveillance radar ( SSR )%extended binary phase shift keying ( EBPSK )%speed measurement%frequency deviation
为了解决二次监视雷达（ SSR）接收到目标应答信号时受到异步干扰的问题，在SSR对目标的应答信号的脉冲宽度内，引入扩展二元相移键控（ EBPSK）对载波进行相位编码调制。理论分析了SSR系统中速度与频偏的关系，通过研究EBPSK相位调制脉冲的波形特点，提出了将EBPSK相位编码脉冲信号作为SSR系统应答信号的方案，从而有效利用异步干扰提升双基站SSR系统的目标测速精度。理论分析与仿真实验结果表明，在目标测速精度方面，EBPSK相位编码的双基站SSR系统明显优于EBPSK相位编码以及纯正弦调制脉冲的单基站SSR系统。因此，验证了EBPSK相位编码脉冲信号在双基站雷达系统中的有效性和可行性。
為瞭解決二次鑑視雷達（ SSR）接收到目標應答信號時受到異步榦擾的問題，在SSR對目標的應答信號的脈遲寬度內，引入擴展二元相移鍵控（ EBPSK）對載波進行相位編碼調製。理論分析瞭SSR繫統中速度與頻偏的關繫，通過研究EBPSK相位調製脈遲的波形特點，提齣瞭將EBPSK相位編碼脈遲信號作為SSR繫統應答信號的方案，從而有效利用異步榦擾提升雙基站SSR繫統的目標測速精度。理論分析與倣真實驗結果錶明，在目標測速精度方麵，EBPSK相位編碼的雙基站SSR繫統明顯優于EBPSK相位編碼以及純正絃調製脈遲的單基站SSR繫統。因此，驗證瞭EBPSK相位編碼脈遲信號在雙基站雷達繫統中的有效性和可行性。
위료해결이차감시뢰체（ SSR）접수도목표응답신호시수도이보간우적문제，재SSR대목표적응답신호적맥충관도내，인입확전이원상이건공（ EBPSK）대재파진행상위편마조제。이론분석료SSR계통중속도여빈편적관계，통과연구EBPSK상위조제맥충적파형특점，제출료장EBPSK상위편마맥충신호작위SSR계통응답신호적방안，종이유효이용이보간우제승쌍기참SSR계통적목표측속정도。이론분석여방진실험결과표명，재목표측속정도방면，EBPSK상위편마적쌍기참SSR계통명현우우EBPSK상위편마이급순정현조제맥충적단기참SSR계통。인차，험증료EBPSK상위편마맥충신호재쌍기참뢰체계통중적유효성화가행성。
To solve the problem that the target response signal of secondary surveillance radar ( SSR) is interfered by the asynchronous interference, the extended binary phase shift keying ( EB-PSK) is introduced for carrier phase coded modulation within the radar pulse width.The relationship between the target speed and the deviation of frequency in the SSR system is analyzed theoretically. By studying the waveform characteristics of the EBPSK-based phase-coded pulse signal, a scheme taking EBPSK-based phase-coded pulse signal as the response signal in the SSR system is proposed, where the asynchronous interference of the SSR system is used effectively to improve the precision of speed measurement.The theoretical and simulation results show that the speed measurement precision of bistatic SSR signals with EBPSK modulation is better than that of single SSR signal with sine and EBPSK modulation.Therefore, the efficiency and feasibility of the EBPSK-based phase-coded pulse signal is verified in the bistatic SSR system.
