| 1. | Development of distributed target
叠靶研究 |
| 2. | Help the sales department to realize the distribution channel and distributing target , supervising the fee for publication of the distributors
协助销售部实现销售通路和分布目标，管理代理商的宣传费用。 |
| 3. | The dissertation thoroughly studies the distributed target ' s raw data simulation of spaceborne sar , the main contents of it are as follows : 1
本文对星载sar分布目标原始数据模拟进行了深入而细致的研究，其主要内容可归结到以下几点： 1 |
| 4. | 4 . based on the raw data simulation algorithm , a method of developing distributed target ' s raw signal simulator of spaceborne sar is given
本文在星载sar分布目标原始数据模拟方法基础上，提出了一种星载合成孔径雷达分布目标回波模拟源的实现方法。 |
| 5. | The raw signal simulator , which could generate the real - time echoes of distributed target , is divided into two parts : software and hardware platforms
软件模块的功能是生成星载sar分布目标原始数据，而硬件模块的功能是实时的把离散的原始数据转换成模拟的射频输出信号。 |
| 6. | I am sure the study of the distributed target ' s raw data simulation will have definite reference and applications value for the study of sar system ' s design and imaging
相信本文的星载sar分布目标原始数据模拟研究工作对星载sar的应用和系统研究具有一定的参考和应用价值。 |
| 7. | Scatterring centers from each azimuth range profile are extracted firstly , and then turn two dimension distributed target scatters into one dimension and integrates all scatters energy along one dimension
仿真结果表明，该方法较距离扩展目标检测方法的检测性能有明显改善，且其检测性能随着角分辨率的提高而进一步改善。 |
| 8. | Since phase gradient autofocusing ( pga ) often produces unsatisfactory results when operating upon scenes that are dominated by distributed targets , a modified weighting average phase errors estimation method is proposed
针对相邻强目标导致的相位梯度自聚焦算法( pga )收敛速度下降，提出了一种加权平均相位误差估计方法。 |
| 9. | Then an overview of the principle of sar is given , the computer model of the radar echo is discussed in detail , the simulation result of the ideal static point target and ideal static distributed target based on the computer model are presented
在阐明合成孔径雷达基本原理的基础上，深入地探讨了合成孔径雷达的回波模型，并借助此模型分别进行了理想静止点目标和分布目标的回波仿真。 |
| 10. | According to the echo structure of fm - cw sar , a fast algorithm for echo simulation of distributed targets based on fft is presented , reducing the computation significantly comparing with one by one point superposition
针对大面积分布目标的回波模拟需要大量运算,依据调频连续波合成孔径雷达回波结构的特点,提出了一种基于fft的快速回波模拟算法,与直接点目标求和方法相比运算量大大缩减。 |
