| 1. | With pulse compression techniques , two - dimensional high resolution imaging to distant targets can be realized
为了获得高的横向分辨率,要求载机沿理想航线飞行。 |
| 2. | 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。 |
| 3. | 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。 |
| 4. | 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。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | Based on the doppler effect and pulse coherence technique , synthetic aperture radar ( sar ) breaks through the azimuth resolution limitation imposed by real aperture antenna . in combination with the pulse compression technique , two - dimensional high resolution imagery to distant targets can be realized
合成孔径雷达( sar )利用以多普勒频移理论和脉冲相参为基础的合成孔径技术，突破了实孔径天线对方位向分辨力的限制，与脉冲压缩技术相结合，实现了远距离目标的二维高分辨成像。 |
| 8. | Pulse compression technique is widely used in modern radar systems . large timeband product signals such as linear frequency modulation signals ( lfm ) , nonlinear frequency modulation signals ( nlfm ) , phase coded signals and so on 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 ) 、非线性调频( nlfm )和相位编码信号等,提高距离分辨力。 |
| 9. | This thesis mainly studies the digital pulse compression technique and analyses the pulse compression performance of lfm signal with high compression ration . it also simply describes the basic theories of sar imaging and signal processing . based on these theories and high performance digital signal processing chip adsp21160 , we successfully design and realize a frequency domain digital pulse compression system on hhpc board with four adsp21160 embedded
本文主要研究了合成孔径雷达成像技术中距离和方位频域数字脉冲压缩技术，着重分析了高压缩比下lfm信号的脉压性能，简述了合成孔径雷达成像的基本原理和信号处理，在此基础上结合高性能数字信号处理芯片adsp21160研制成功了基于hhpc板的二维频域数字脉冲压缩处理系统。 |
