更糟的是，它们有限的探测距离无法对飞机进行跨海跟踪。
Perhaps worst of all, their limited range means they cannot track planes over the ocean.
FWHM和FWTM与探测距离呈线性关系而增大；
目的探讨探测距离对SPECT断层分辨率的影响。
Objective This study investigated the effects of detecting distance on SPECT tomographic resolution.
给出了一定探测距离下，激光的衰减与烟尘浓度的变化关系。
The change of the relationship between the laser attenuation and soot concentrations within a particular detection range has been given.
根据发射信号波形参数估算出脉冲激光探测的最大探测距离。
The maximal detection range can be estimated on the transmitted signal parameters in pulse laser detection.
具有灵敏度高，响应时间快，探测距离远，环境适应性好的特点。
The flame detector benefits from high sensitivity, fast response time, long detection range and is fit for hazardous environment.
表征测井仪器可以测量的从井壁(或仪器表面)到地层的探测距离。
A distance that characterizes how far a logging tool measures into the formation from the face of the tool or the borehole wall.
随着玻璃厚度的增加和探测距离的改变，系统的信噪比会随之变化。
While, the system signal-to-noise ratio (SNR) value decreases with the increase of the glass thickness and the detection distance.
这将因此减少了探测距离，或可能有结果，只有大型的金属件将被检测到。
This will consequently reduce the detection distance or may have the result that only large pieces of metal will be detected.
探测距离是衡量空间目标天基可见光相机探测、识别能力的一项重要指标。
The range of detection is one important specification for expressing the ability of detection and recognition of space-based optical camera.
分布式星载雷达突破了单星雷达受功率孔径积的限制，具有更远的探测距离；
Compared to single-satellite radar, a great power-aperture product with longer detection range can be achieved by distributed space-based radars.
本文在介绍大气波导的分类基础上，重点论述了蒸发波导对雷达探测距离的影响。
This paper introduces the classification of atmospheric duct, analyzes the influence of the evaporation duct on the detecting range of radars.
在平均功率不变的情况下，可以通过减小激励电流的占空比来增加最大探测距离。
The maximal detection range increases with the reducing duty ratio of the drive current when the transmitted average power is constant.
增大探测距离、快速精确跟踪是高频地波雷达探测飞行小目标所面临的主要困难。
Increase of detection range and fast precision tracking are main difficulties in weak aerial target detection for High Frequency Surface Wave Radar (HFSWR).
基于最小分辨对比度准则，研究了天空背景下红外点目标的最大探测距离估计方法。
This paper investigates the approach to estimate the maximum detection range of an infrared point_target against sky background based on the minimum resolved contrast(MRC)criteria.
这种单个点阵图所表示的最大范围只是一个已知雷达在规定波长和位面的探测距离。
Such a single point figure permits at best a detection range estimate for a known radar operating at the specified wavelength and aspect.
微光观察仪是在微弱光条件下用来观察目标的一种仪器，探测距离是它的一项重要指标。
Image intensifier is apparatus which can objects under weak light conditions, the range is one of its parameters.
使用它的长期、中期和短期的雷达系统，它能探测距离200码的对象作为你前面的车。
Using its long, medium, and short range radar systems it can detect objects as far as 200 yards in front of your vehicle.
结果发现，放射源与探测器之间屏蔽的好坏和合理的探测距离对提高线性度有很大关系。
The results show that the big relation for increasing linear degree is related by the good and bad screening between radiator and detector, and the reasonable geometric.
叙述国产某新型微光观察仪探测距离的测试内容和方法，并得出具有一定参考价值的结论。
The testing content and procedure on detection range with a certain new model low light level observation device are described.
方法对吸收材料厚度及探测距离均很敏感，不仅可用于核材料识别，也可应用于核材料定位。
The method is sensitive to absorbing materials'thickness and detection distance, can used in nuclear materials identifying and location.
控制部分主要对发送器发出的脉冲链频率、占空比及稀疏调制和计数及探测距离等进行控制。
Control part of the main chain of the transmitter sends out pulses of frequency, duty cycle and sparse modulation and counting and detection distance control.
利用目标的反射光、两种激光波段的大气消光系数和其它关键技术来提高激光雷达的探测距离。
It USES reflection of object, atmosphere extinction coefficient of two laser wavelengths and others key technology to improve the observational distance of laser radar.
基于单双基地雷达的RCS特性，建立了双基地制导雷达探测距离随站间距离变化的数学模型。
Based on the RCS characteristic of single and bistatic guidance radars, the mathematical model, which describes the finding range varies with the distance between stations, was constructed.
提出了电荷灵敏前置放大器应用于APD激光脉冲探测系统以提高探测距离和探测精度的方法。
A method that charge sensitive preamplifier used in APD detection system of laser pulse was presented to enhance the range and precision of the detection system.
在采用NETD计算红外热像仪的探测距离时，需要计算目标在热像仪探测波段范围内的辐射亮度差。
When the detection range of the IR thermal imager is calculated by using NETD, the target radiation brightness difference must be calculated in the operating wave band.
无源定位与跟踪技术自身不辐射电磁波而且探测距离远，所以它在电子侦察中扮演着越来越重要的角色。
Passive localization and tracking system plays an important role in the electronic reconnaissance, because it works silently without electromagnetic radiation and covering larger region.
为估算光电系统的目标探测距离，研究了目标的红外辐射特性和在实验室内对系统灵敏度进行测试的方法。
For evaluating the detection distance of an electro-optic system, the characteristics of target infrared radiation and the test method of detection sensitivity of the system in laboratory are studied.
为估算光电系统的目标探测距离，研究了目标的红外辐射特性和在实验室内对系统灵敏度进行测试的方法。
For evaluating the detection distance of an electro-optic system, the characteristics of target infrared radiation and the test method of detection sensitivity of the system in laboratory are studied.
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