| 1. | Different resolution pixels have a series of transmission coefficient , according to this , feature of biological specimen , we device a protein model with several differnt high steps
摘要按照生物样品分辨单元具有多种透过率的特点，设计了一个多衬度的台阶状蛋白质模型，根据曝光量与衬度，信噪比，抗蚀膜性能的关系，确定了曝光量。 |
| 2. | Simulation results obtained using data and real data show that this method is effective . ^ for the active low - resolution radar , its longitudinal resolution usually is more than one hundred meters and as high as several hundred meters
针对现役的低分辩雷达，它的纵向分辨率通常达一百米甚至数百米对于编队飞行的目标，由于目标的间距和方位张角都小于低分辨雷达的可分辨单元， |
| 3. | In this paper a maneuver target detection method based on acceleration compensation is proposed to solve the problem mentioned above . with the ability to refocus return target signal energy to a single doppler cell , this method can gain a better maneuver target detection ability
针对上述问题本文提出了一种基于加速度补偿的机动目标检测方法,该方法能够将目标回波能量重新聚集到一个多普勒分辨单元内。 |
| 4. | In this thesis a high precision frequency ( range ) estimation technique based on the phase of the fft of the beat - note signal is presented . the phase of the fft of the beat - note signal changes with the range between the radar and the liquid surface
差拍信号的fft幅度最大处的相位随距离变化，因此可以利用fft相位在一个频率(距离)分辨单元范围内估计差拍信号的频率(距离)的位置，从而提高频率(距离)估计精度。 |
| 5. | Terrain slope information can be drawn from polarimetric synthetic aperture radar ( sar ) two - dimensional image , so that three - dimensional image can be generated . it differs from two - pass or repeated trace insar that uses interference phase method to obtain topography height . the p - sar three - dimensional image technology uses the stokes matrix formed by two - dimensional images resolution cells , then applying polarimetric synthesize to stokes matrix can produce polarization signature of the scatter cross - section a - ( , x ) for any ( ellipticity ) and ( orientation ) polarization state
这种方法不同于重复轨道和双通道insar系统，不是利用干涉法提取高度信息，而是利用极化sar二维图像各分辨单元的stokes矩阵，通过极化综合估计每个分辨单元的共极化散射特性和交叉极化散射特性(极化指纹) ，以及共极化散射特性最大值时对应的极化椭圆度x利极化椭圆方向角，求解地形的高度轮廓。 |
| 6. | By computing the between two resolution units , we can estimate terrain azimuthal slopes and derive estimate of terrain elevation . the terrain contour is determined uniquely by ay / from azimuth slop on range gates . american began to study p - sar three - dimensional images technology in 1990s
Schuler已经证明，对于一个均匀分布场景， sar图像上两个相邻分辨单元的极化椭圆方向角偏移量，与地形方位向坡度的对应关系是线性唯一的，地形方位向的倾斜度可以通过解唯一地被测定。 |
| 7. | Super - resolution spatial spectrum estimation is applied in this dissertation to realize bearing resolution by utilizing the different bearings between targets and first - order sea echoes . the simulation of radar echoes in one resolution cell is presented based on the theoretically analyzing hf sea clutter sea clutter reflection characteristic and sea echo spectrum stretching mechanics
本文从分析高频海杂波反射特性以及平台运动引起海浪展宽机理入手,建立便于理论研究的一阶展宽的海杂波和二阶海杂波模型;在分辨单元上对雷达回波信号进行了仿真。 |
| 8. | A polarimetric sar combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images , and is thus playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers for application in both civil and military areas
极化合成孔径雷达（ sar ）具有可以测量场景中每个分辨单元的全极化散射矩阵以及产生二维高分辨力图像的两大优点，因此无论在民用和军用的采集地表或地面覆盖物的物理和电磁结构信息的应用中起着越来越重要的作用。 |
| 9. | Because of its ability not only to produce two - dimensional high resolution images of the scene illuminated , but also to measure complete complex scattering matrix for each resolution cell , and to operate under all weather conditions and all the time , day and night , a polarimetric synthetic aperture radar ( sar ) is playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers of the earth
极化合成孔径雷达( sar )能够通过照射场景，对场景进行二维(方位向和距离向)高分辨力成像，同时测量出每个分辨单元的复散射矩阵。由于极化合成孔径雷达具行全天候和全气候工作的能力，使得极化合成孔径雷达在采集地表及其覆盖物的物理(电结构)细节信息方面起着越来越重要的作用。 |
| 10. | The polarimetric sar is a new type imaging radar to measure polarimetric characteristic of radiant signals and combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images , which greatly improve its ability to discern surface features . polarimetric sar is thus playing a more and more important role in research on remote sensing and application area
极化合成孔径雷达( polarimetricsar )是用来测量辐射信号极化特征的新型成像雷达,具有能够测量场景中每个分辨单元的全极化散射矩阵和产生二维高分辨率图像的两大优点,大大提高了它对地物的识别能力,因此在遥感技术研究与应用领域中起着越来越重要的作用。 |
