当真正的数据来自于某些像18米孔径的空间望远镜时，天体生物学家将无从解释，而且永远也不能达成共识。
And when the real data trickle in from something as big as an 18-meter aperture space telescope, astrobiologists will be befuddled interpreting it. They may never reach a consensus.
论文对星载合成孔径雷达数据形成分机地面测试仪的硬件、软件设计及功能等方面进行了详细地研究。
The thesis presents the hardware design, software design and functions of the ground testing apparatus of space-borne SAR data-forming equipment in detail.
本文主要根据机载合成孔径雷达实测数据进行多普勒参数估计和成像算法的研究。
This paper mainly investigated the estimation methods of doppler parameters and the imaging algorithms of airborne stripe SAR.
最后展望了合成孔径雷达原始数据压缩的发展前景。
Finaly, the prospects for synthetic aperture radar raw data compression is looked forward.
要深入了解吸附和催化过程，吸附剂和催化剂的孔径分布数据是必要的。
A knowledge of the pore size distribution of catalyst and adsorbent is necessary for the understanding of the details of adsorptive and catalytic processes.
通过子孔径方法，可以有效降低数据率及雷达发射峰值功率，并可解决多普勒中心频率的时变问题。
With the subaperture method, data rate and radar transmit peak power can be effectively reduced, the time variant of Doppler center frequency can be resolved.
高时效性和大数据量是合成孔径雷达(SAR)实时成像处理系统的两个主要问题。
The data volume and the high real-time are the two vital problems of Synthetic Aperture Radar (SAR) real-time imaging system.
合成孔径雷达（SAR）成像具有数据量巨大、算法比较复杂等特点。
Synthetic aperture radar(SAR)image has some common features such as huge data volume, relative complex algorithm.
分块自适应量化(BAQ)算法是目前最适于工程实现的合成孔径雷达(SAR)原始数据压缩算法。
Block Adaptive Quantization (BAQ) is the most efficient algorithm for Synthetic Aperture Radar (SAR) raw data compression. In this paper, the theory on this algorithm is introduced.
利用最大熵谱估计的方法对四种飞机目标数据进行外推处理，并在此基础上进行逆合成孔径成像。
The maximum entropy method is adopted to extrapolate data, and ISAR image is obtained based on this.
一种限制仪器或系统的测量作用的机制。地震数据采集中，排列的长度就有孔径的作用。
A mechanism to limit the affects of measurements on a device or system. In seismic data acquisition, the length of the spread has the effect of an aperture.
从全极化合成孔径雷达（SAR）图像数据中，可提取方位向的地势倾斜度信息，形成极化SAR三维成像。
Terrain slope information may be drawn from polarimetric synthetic aperture radar (SAR) two-dimensional image, so that three-dimensional image can be generated.
用现场可编程门阵列（FPGA）对合成孔径雷达（SAR）原始数据进行压缩能降低数据压缩时间，增加雷达分辨力。
Using field programmable gate array (FPGA) for synthesized aperture radar (SAR) data compression can reduce the time of data compression, so it increases the resolution of radar.
结果表明，孔径抖动引起的孔径误差随着高速数据采集系统输入信号频率的升高而增大，由此将引起系统信噪比的下降。
The jitter error brought in by the aperture jitter increases as the frequency increase of the input signal in high speed data acquisition systems, thus it degrades the system's SNR.
实践表明，星载合成孔径雷达数据在铀矿勘查中有潜在的应用前景。
The practice has indicated that the application of spaceborne SAR data to uranium reconnaissance and exploration has potential prospects.
该记录系统目前用于某机载合成孔径雷达项目的数据记录，具有记录速度高，可靠性好的特点。
This data recording system is now used for a SAR project and has been proved that it is of high recording speed and high reliability.
高分辨大场景合成孔径雷达(SAR)成像给数据存储和传输系统带来沉重负担。
High resolution and wide swath Synthetic Aperture Radar (SAR) imaging increases severely data transmission and storage load.
但由于偏移算子的孔径影响，经偏移得到的三维地震数据体在空间上被模糊了，不利于进行断层检测。
Because of influence of aperture of migration operator, the image of 3-d seismic data volume in space is smeared after migration, which is unfavorable for detecting the faults.
本文结合真实机载合成孔径雷达原始数据，研究了合成孔径雷达原始数据压缩算法。
In this article, Some SAR raw data compression algorithms have been studied by using true airborne SAR raw data.
在分析合成孔径雷达成像原理的基础上，建立了雷达回波信号模型，提出了一种生成回波数据的方法。
The model of radar echo signal is founded based on the analysis of SAR imaging theory in this paper. Thereout, a method used to make SAR echo data is put forward.
方位向压缩后，将各子孔径数据按时间先后排序拼接、运算，合成出全孔径分辨率图像。
After azimuth compression, the sub-apertures are arrayed and synthesized to offer a full-aperture resolution image.
星载SAR数据形成分机地面测试仪是合成孔径雷达测试的关键设备，在SAR研制过程中有着重要的实用价值。
The ground testing apparatus of space-borne SAR data-forming equipment is a key testing apparatus and has important practical value.
论文围绕星载合成孔径雷达数据形成分机地面测试仪的设计、实现及测试展开研究。
The thesis presents the study on design, implementation of the ground testing apparatus of space-borne SAR data-forming equipment.
卫星云图的帧周期变化，数据是突发性的。为了提取帧同步信号，研制出“定位孔径技术”，可靠地提取帧同步信号。
The frame period of satellite image changes suddenly, a positioning aperture technique is implemented to reliably acquire the frame period.
综合孔径雷达(SAR)实时成像处理器，在满足分辨率的情况下，通过预滤波和降采样的方式降低数据率来满足系统处理带宽的要求。
Under the condition of meeting resolution, the SAR real-time imager can satisfy the demands of the processing band by pre-filter and down-sample.
合成孔径雷达光学处理器(OSARP)与普通成像系统不同，它处理合成孔径雷达(SAR)，数据片。
An Optical Synthetic Aperture Radar Prccessor (OSARP) is different from the conventional imaging system. It warks after Synthetic Aperture Radar (SAR) and processes image from SAR data film.
合成孔径雷达的数据压缩算法也经历了很多演变，它是其中数字信号处理中的一个重要步骤。
The data compression is one of the most important digital signal processing stages of the SAR.
由于合成孔径雷达(SAR)原始数据的相关性很低，直接压缩原始数据是比较困难的。
It is difficult to directly compress synthetic aperture radar (SAR) raw data for the low relativity.
由于合成孔径雷达(SAR)原始数据的相关性很低，直接压缩原始数据是比较困难的。
It is difficult to directly compress synthetic aperture radar (SAR) raw data for the low relativity.
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