| 1. | Pulse compression technique is widely used in modern radar systems , to resolve the contradiction between the distance and resolution
现代雷达系统广泛采用脉冲压缩技术,用以解决作用距离与分辨能力之间的矛盾。 |
| 2. | That advance and further improvements in pulse compression techniques have resulted in pulses that have the maximum possible intensity for a given energy of light
有了这个进展，再加上脉冲压缩技术的改良，我们终于能够使固定能量的光产生出最强的脉冲来。 |
| 3. | Large time - band product signals such as linear frequency modulation signals ( lfm ) , nonlinear frequency modulation signals ( nlfm ) , phase coded signals and so on are one of key technologies for pulse compression radar systems
具有大时宽带宽积的信号，如线性调频信号、非线性调频信号、相位编码信号等是雷达应用脉冲压缩技术的关键之一。 |
| 4. | At the same time , they process a great deal of data with high rate . these characteristics make them suitable to realize in fpga . pulse compression technology has request of multi - channel and real - time processing when it is applied in software radar
脉冲压缩技术在软件雷达中应用时,对信号处理有多通道实时处理的要求,由于其算法简单,非常适合于在fpga中实现。 |
| 5. | Linear frequency modulated ( lfm ) signals as the most popular pulse compression signal are a typical kind of time - varying , nonstationary signals , so applying the wigner - ville distribution into lfm signals has more advantages than conventional methods
雷达脉冲压缩技术中所使用的线性调频信号是一类典型的时变非平稳信号，采用时频分析的研究方法处理线性调频信号有着传统方法无法比拟的优点。 |
| 6. | Its high resolution in range is fulfilled by using pulse compression method . its high resolution in azimuth is achieved by utilizing the doppler information among the signals received by sar at different locations . hence , the acquired image of the targets is of very high resolution
它采用距离向的脉冲压缩技术和方位向不同位置上接收到的脉冲间的多普勒信息来获得两维的高分辨率，从而得到高分辨率的目标图像。 |
| 7. | Pulse compression technique and large timeband product signals such as linear frequency modulation signals , nolinear frequency modulation signals , phase coded signals and so on are widely used in modern radar systems to improve the resolving power both in range and in speed domain
现代雷达为了提高雷达作用距离和速度分辨力、距离分辨力，广泛采用了脉冲压缩技术及大时宽带脉压信号如：线形调频、非线形调频、相位编码信号等。 |
| 8. | Synthetic aperture radar ( sar ) is a new type of radar system developed since 1950 ' s . it breaks through the resolution limitation imposed by real aperture . with pulse compression technology , two - dimensional high resolution to distant targets can be realized
合成孔径雷达( sar )是五十年代发展起来的一种新型雷达体制，它利用合成孔径原理，突破了实孔径天线对分辨率的限制，并结合脉冲压缩技术，可以对远距离目标进行方位向和距离向两维高分辨成像。 |
| 9. | Pulse compression technique is widely used in modern radar systems . it solves the contradiction between the range and velocity resolution . large time - bandwidth product signals such as linear frequency modulation signals ( lfm ) are used in pulse compression technique to improve the resolution in range domain
现代雷达系统广泛采用脉冲压缩技术,在确保雷达作用距离和速度分辨力的前提下,采用大时带积脉冲压缩信号:如线性调频( lfm )信号提高距离分辨力。 |
| 10. | Second , research and analyze the feature of signal of pulse compression radar , and discuss the principle and characteristic of pulse compression technique , that are linear frequency modulation and phase coding . the above two mathematic model is constructed , and shift - frequency noise is imposed on the models , and anti - nose ability is evaluated and simulated
通过对脉冲压缩雷达的信号特征的研究和分析，通过研究线性调频和相位编码脉冲压缩技术的原理和特点，建立了这两种雷达的数学模型，并对此进行移频干扰和相位编码雷达干扰，并进行干扰性能的评估和仿真研究。 |
