Firstly, the obtained radar signal radio frequency, pulse width, repeat frequency are composed to get a combined probability assignment function of radar parameters by applying D-S method.
首先，对侦察雷达所能探测到的目标雷达信号的载频、脉宽、重频，应用证据理论将其组合，得到雷达参数的联合概率分配函数。
The detection probability calculating method about low pulse repetition frequency(LPRF) PD radar against air vehicle is studied.
提出了低脉冲重复频率（LPRF）PD雷达探测飞行器目标的发现概率计算方法。
The frequency response of the transducers is measured experimentally using laser ultrasound and a pulse echo reflecting method. The spectral analysis results are compared and analyzed.
由激光超声方法和自发自收脉冲反射法实验测定了所制作的换能器的频率响应，并比较了频谱分析结果。
A novel drive system with high frequency AC pulse density modulation for electric vehicles is proposed, and its operation principle and control method are studied in detail.
提出了一种用于电动汽车的高频交流脉冲密度驱动系统并阐述了系统的工作原理和控制方法。
Blind speed phenomenon due to Doppler frequency usually exists in moving target indication radar. This disadvantage affect is avoided through staggered pulse repetition frequency method.
动目标显示雷达中通常存在多普勒频率所引起的“盲速”现象，常采用参差脉冲重复频率的方法来克服这种不利影响。
The paper introduces the principle of frequency measure based on double-counter and multi-periods pulse synchronization method, and the designing with microprocessor is offered.
介绍了双计数器多周期同步法频率测量原理，给出了用单片机实现的具体实现方案。
Experimental results show that low frequency pulse compression and channel match method can be used in shallow water sound channel to improve the SNR.
实验表明，脉冲压缩可有效增加浅海低频声脉冲的传输距离，信道匹配可用于消除多途对脉冲信号检测信噪比的影响。
This paper presents a system simulation method of pulse Doppler radar altimeters with frequency agility.
本文提出了雷达高度计的一种系统模拟方法。
This method analyzes VHF and UHF signal of detected cable joint, using time and frequency analysis. This method can be used for detecting PD pulse inside or outside the insulating joint.
该法对电缆绝缘接头处VHF和UHF信号的时域和频域分析可有效地识别被测电缆绝缘接头部内、外部的局放信号。
Use single stage version to reach the temperature of 20 K is a difficulty for high frequency pulse tube cooler (PTC). Multi-stage version is a popular method to reach the low temperature.
单级高频脉冲管制冷机直接降低到20K以下温区存在很大困难，采用多级方案是高频脉冲管制冷机获得更低温度的主要方法。
The angle cheating interference is very effective for the pulse Doppler radar seeker. It is difficult to find an effective suppression method of this kind of interference in time and frequency domain.
角欺骗干扰是脉冲多普勒雷达导引头十分有效的干扰方式，在时频域均难以找到其有效的抑制方法。
In the design, in view of the breakdown different form, has studied the sound detection law, the pulse magnetic field law, the audio frequency induction method and so on each method principle.
在设计中，针对故障的不同形式，研究了声测法、脉冲磁场法、音频感应法等各种方法的原理。
Therefore, a cooperation method of the frequency and fuel flow should be used for pulse detonation engine control.
所以对于脉冲爆震爆震发动机应采用调节爆震频率和燃气填充相结合的控制策略。
The invention provides a healthy physical therapy chip module as an implementing method of the low-frequency modulation pulse physical therapy.
本发明提供一种健康理疗芯片模块，作为低频调制脉冲理疗技术的一种实 现手段。
The invention provides a healthy physical therapy chip module as an implementing method of the low-frequency modulation pulse physical therapy.
本发明提供一种健康理疗芯片模块，作为低频调制脉冲理疗技术的一种实 现手段。
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