查询词典 clutters

As for the inadequate contrast of infrared thermal imaging, as S curve mapping function is proposed to enhance target objectives and in the meantime suppress background clutters, which has the same range of domain with a variable interval and a non-symmetrical inflection point.

针对红外热成像对比度不足的问题，提出了一种S曲线映射函数，该函数具有定义域与值域区间一致、拐点非对称的特点，在目标图像增强的同时拟制了杂波背景。

By sky or ground wave propagation, the detection range of the HF radars breaks through the limit of the curvature of the earth, which makes it possible for long-range air early-warning and target monitoring. At the same time the unique abilities in detecting low-detectable targets of the HF radars makes them powerful equipments for detection of hermit aircrafts, small airplanes in heavy land and sea clutters, and even intercontinental missiles.

借助于天波或地波传播方式，高频雷达的探测范围突破了地球曲率的限制，因此使远距离空中预警和目标监测成为可能，同时高频雷达所具有的独特和良好的对低可探测性目标的探测能力，使之成为探测隐形飞行器和处于强地杂波和海杂波背景中的小型军用飞机、巡航导弹等贴地、贴海飞行的小目标及洲际导弹进行有效探测的有力装备。

Methods Based on the modern spectral estimation method, a modified Levison′s algorithm was proposed to simulate the radar clutters of typical correlated power spectral characteristics and estimate the order of corresponding AR model.

方法用基于现代谱估计方法，提出了一种修正的Levison算法，并对典型相关功率谱特性的高斯杂波及其AR模型的阶数进行了计算机仿真和估算。

To improve the detectability of the Top-hat transformation and suppress the effect of noises or clutters, a new class of Top-hat transformation is proposed. Firstly, the shortcomings of the classical Top-hat transformation are analyzed.

为了简单有效地提高Top-hat变换的目标检测能力，降低噪声及复杂背景对其性能的影响，提出了一类新的Top-hat变换。

I have to spend too much time and energy on some ignorable clutters

我要花太多的时间精力在一些曾经觉得微不足道的小事情

Its main function is to produce radar echoes , clutters and noise .

它的主要功能是用来产生目标的回波，杂波和环境噪声，在前端电波不存在的情况下对雷达分系统进行调试。

None of the proposed methods will be effective enough to remove ground clutters.

提出来的方法都不足以排除地面杂波。

The theoretical analysis and the experimental result indicate validity of the algorithm in detecting target under cloud clutters background.

理论分析和实验结果表明，该算法能有效检测出云杂波背景下的小目标。

Based on typical models, clutters are generated on computer so as to study the feasibility of simulation algorithms.

本研究的目的就在于总结现有的杂波模型和模拟方法，并根据典型模型，通过计算机模拟产生杂波信号，研究模拟方法的有效性。

The simulation method and idea are also of value for the simulation of some other two-dimensional clutters.

文中的方法和思路对于其他二维杂波模拟同样具有参考价值。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。