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双语推荐：相参

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非相参积累技术是雷达信号处理中提高回波信号信噪比的重要方法。非相参积累是对目标反射回的回波信号进行的积累,目标的状态影响着回波信号的形式,运动目标造成了回波信号的起伏变化,起伏目标下的非相参积累显得尤为重要。对起伏目标下的非相参积累与信噪比的关系进行了详细分析,通过数据对不同起伏目标下非相参积累的检测性能进行了仿真比较,并通过对比的结果得到了一些结论。
The technology of noncoherent integration is an important method in radar signal processing, it could improve the SNR(Signal to Noise Ratio)of the return signal. Noncoherent integration is the integration of the return signal reflected back from the targets, the targets’state affects the form of the return signal. The moving targets cause the fluctuating of the return signal, so noncoherent integration under the fluctuating targets is particularly important. It analyzes detailedly the relationship between noncoherent integration under the fluctuating targets and the SNR, simulates and compares the detection performance of noncoherent integration under the different fluctuating targets through the data, and gets some conclusions through the result of constrast.

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分布式全相参雷达是一种新体制雷达,它解决了大口径雷达难以机动部署、造价昂贵等问题,是下一代雷达的发展方向,目前实现分布式全相参雷达所面临的关键技术问题是时间同步和相位同步。对此,该文分析了时间同步误差和相位同步误差的来源,建立了相应的数学模型,仿真了同步误差对相参性能的影响,给出了时间同步误差及相位同步误差的指标要求。并基于有线传输的非相关传输方式提出了时间同步方案,基于定标的方式提出了相位同步方案,以分别实现分布式全相参雷达的时间同步和相位同步。该文所提出的分布式全相参雷达同步方案,对于这一新体制雷达的实现具有一定的指导意义。
10.3724/SP.J.1300.2013.20104

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讨论了如何采用数字中频存储方法实现雷达中频目标模拟,着重阐述了实现原理和实现方法,从而解决了相参雷达系统模拟中相位相参、高动态范围、低杂散等问题。
This paper discusses how to simulate the radar intermediate frequency （IF） target by adopting the method of digital IF storage,centres on expounding the realization theory and method, thereby solves the problems in coherent radar system simulation such as phase coherent signal, high dynamic range,low clutter, etc..

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针对基于速度搜索和离散调频傅里叶变换(DCFT)的多帧相参积累检测前跟踪(TBD)算法运算效率低的问题,提出了一种基于动态规划(DP)和DCFT的多帧相参积累TBD算法。该算法利用DP算法搜索位于不同距离单元和方位单元的目标回波,极大地优化了搜索过程,提高了运算效率。仿真实验表明,与传统非相参积累DP-TBD算法相比,在检测概率90%处,所提算法有1.6 dB的提高;与基于速度搜索和DCFT的多帧相参积累TBD算法相比,所提算法运算效率提高了3.6倍。
Aiming at the problem of the low computational efficiency of the coherent TBD ( Track-Before-Detect) algorithm based on velocity searching and DCFT ( Discrete Chirp-Fourier Transform) , a coherent TBD algorithm based on DP ( Dynamic Programming) and DCFT is proposed. In the proposed algorithm, the target echoes locating at different range cell and the azimuth cell are searched by the DP algorithm, which optimizes the searching procedure and improves computational efficiency. Simulation results show that compared with the traditional non-coherent DP-TBD algorithm, the performance of the proposed algo-rithm improves 1 . 6 dB for 90% detection probability;compared with the coherent TBD algorithm based on velocity searching and DCFT, the computational efficiency of the proposed algorithm improves 3. 6 times.

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针对采样引起时域相参积累损失以及相参积累算法运算量较大的问题,该文提出一种在快时间频域实现长时间相参积累的快速算法。该算法在快时间频域利用非均匀快速傅里叶变换(FFT)校正距离走动,完成相位补偿,然后通过快速逆傅里叶变换(IFFT)实现积累。该算法可以避免由采样引起的积累损失且运算量相对较小,理论分析和仿真结果验证了该算法的有效性。
Sampling may cause some loss for coherent integration in time domain and the computation burdens of the common coherent integration algorithms are usually heavy. To resolve these issues, a fast algorithm realizing long-term coherent integration in fast-time frequency domain is proposed. The algorithm firstly utilizes non-uniform FFT to accomplish range walk correction and phase compensation in fast-time frequency domain, and then fulfills the integration via IFFT. The proposed algorithm can avoid loss entailed by sampling, and needs relatively less computation. The theoretical analysis and simulation results demonstrate the effectiveness of the proposed algorithm.

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建立高效液相色谱法(HPLC)测定速效女士栓中苦参碱的含量。方法:采用氨基键合硅胶为填充柱,以乙腈-无水乙醇-3%磷酸溶液(80:10:10)为流动相,检测波长为220nm,流速1.0ml/min。结果:苦参碱在20.08μg~100.4μg范围内呈良好的线性关系。苦参碱平均回收率为98.62%(RSD=1.82%)。结论:本测定方法简便、快速、准确,可用于速效女士栓中苦参碱的含量测定。
Objective:To establish a HPLC method for content determination of matrine (HPLC) available in MS bolt. Methods:using amino bonded silica gel packed column with acetonitrile, ethanol-3% phosphoric acid solution(80:10:10) as mobile phase, the detection wavelength was 220nm, the flow rate was 1.0ml/min. Results:matrine in 20.08ug~100.4μg range showed a good linear re-lationship. Matrine and the average recovery was 98.62%(RSD=1.82%). Conclusion:this method was simple, rapid, accurate, and can be used for content determination of matrine in available lady hydrant.

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目的建立用高效液相色谱法测定复方参花搽剂中苦参碱含量的方法。方法色谱柱为Econobase C18柱,柱温为28℃,流动相为乙腈-0.1%磷酸(20∶80),流速为1.0 mL·min-1,检测波长为210 nm。结果苦参碱在1.038~20.76μg·mL-1范围内线性关系良好(r=0.999 4),平均回收率为99.35%,重现性试验RSD为1.95%。结论该方法简便,准确,重现性好。
Objective To establish an HPLC method for the determination of matrine in Compound Shenhua Liniment. Methods The column:Econobase C18 ,column temperature:28 ℃ ,The mobile phase:acetonitrile - 0. 1% phosphate(20:80),the flow rate:1. 0 mL·min - 1 . The detection wavelength was 210 nm. Results The linear range of matrine was 1. 038 ~ 20. 76 μg· mL - 1( r = 0. 999 4),the average recovery was 99. 35% ,the RSD of repeatability test was 1. 95%. Conclusion The method was simple and fast,the results were accurate and reproducible.

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针对高速运动目标相位编码回波信号不能进行长时间相参积累，提出双频共轭处理方法，该方法采用双频共轭及Keystone变换处理，同时解决高速运动目标越距离单元走动及速度模糊，实现信号的有效相参积累。采用两目标回波仿真数据进行实验，实验结果表明了该方法的有效性。
Since the phase?coded echo signal of high?velocity moving target can’t be long?term coherent integration,a meth?od of double?frequency conjugate processing is proposed in this paper,in which the double?frequency conjugate processing and Keystone transform are adopted to solve the range migration and velocity ambiguity of high?velocity moving target simultaneously and realize effective coherent integration. The two targets echo simulation signals were used in experiment. The experimental re?sults indicate that the method is effective.

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建立高效液相色谱法测定苦参碱栓的含量。方法:采用C18色谱柱,乙腈-磷酸溶液(取水100ml加三乙胺0.2ml,用磷酸调节pH值至3.2)(4:96)为流动相,流速为1ml/min,检测波长为220nm,柱温为30℃。结果:苦参碱在0.02385~0.2385mg/ml浓度范围内线性关系良好,平均回收率为100.0%(RSD%=0.7%)。结论:本法简便,灵敏、准确,可用于测定苦参碱栓的含量。
Objective: To develop a method for determination of Matrine Supposttories by HPLC. Method: a C18 column was used, acetonitrile-phosphoric acid solution(to take water 100ml, add triethylamine 0.2ml, adjusted to pH 3.2 with phosphoric acid)(4:96)was used as the mobile phase. The detection wavelength was 220 nm. Results:The calibration curve showed a good linear regres-sion within the range of 0.02385~0.2385mg/ml. The average recovery was 100.0%(RSD=0.7%). Conclusion:The method was sim-ple, sensitive and accurate. It can be used for determination of Matrine Supposttories.

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采用高效液相色谱蒸发光散射法（HPLC-ELSD）测定珠子参根茎中新化合物24（R）-珠子参苷 R1的质量浓度.色谱条件为：Aglilent Zorbax SB-C18（ODS,4.6 mm ×250 mm,5μm）色谱柱,流动相V（甲醇）∶V（水）=58∶42,流速1.0 mL/min,柱温25℃,载气压力1.94×105 Pa,漂移管温度85℃,撞击器关闭,进样量20μL.结果表明：在0.40-20.0μg内,24（R）-珠子参苷R1线性关系较好,r=0.9993（n=6）；24（R）-珠子参苷 R1的平均回收率为98.7%,RSD=1.28%（n=6）.
The determination of the new compound of 24(R)-majoroside R1 in Panaxjaponicus C.A. Mey.var.Major (Burk.)C.Y.Wu et K.M.Feng was developed by HPLC-ELSD method.The conditions of chromatography were Aglient Zorbax SB-C18 Column (ODS,4.6 mm×250 mm,5μm) was adopted;mobile phase was composed ofV(methanol)∶V(water)=58∶42;flow rate was set at 1.0 mL/min;temperature of column was set at 25 ℃;carrier gas pressure was set at 1.94×105 Pa tube temperature of ELSD was set at 85 ℃;impactor was set in closed state.As the results show in the range of 0.4-20.0μg,the linearity of 24(R)-majoroside R1 is good,r=0.999 3(n=6),the average recovery was 98.7%,and RSD=1.28% (n=6).

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