无源定位方法是无源探测系统的核心。
The core of passive location system is the passive locating method.
本文选用多普勒频率变化率定位法作为海上无源探测系统的定位方法。
The paper selects the Doppler changing rate method in naval passive location system.
因此，目标反射信号的检测和提取是个难点，也是无源探测定位的关键技术之一。
So, the detection and extraction of signals reflected by the target are difficulties and the key technology of passive tracking location.
在分析GPS信号特性的基础上，对利用GPS进行舰船目标的无源探测进行了分析研究。
With the analysis of the feature of GPS signal, passive detecting for ship objects using GPS signal is studied in this paper.
战争环境复杂化，及各种隐身目标的出现，使得传统的针对合作目标的无源探测技术无法满足现代战争需要。
Because of more hidden objects appear and the environment become more complex, the traditional detecting technology can't fulfill the need of modern war.
由于被动探测系统本身不发射电磁波，完全是被动工作方式，因此，近年来，多站无源探测工作方式日益受到各国的广泛重视。
Because this system gives no radiation wave itself and works completely in passive mode, multi-station passive detection system has attracted more and more attention in a variety of country.
最后，本文简要地分析了基于模拟电视信号的无源探测性能和定位精度，并分别与基于数字电视信号的无源雷达系统的相应性能作了比较。
Last, after analyzing signal characteristics and locating performance of analog TV, its detecting characteristics and locating performance are compared with those of HDTV signal.
为此，提出一种利用空频域信息的固定单站无源探测定位方法，利用波达方向、相位差变化率、载波频率及多普勒频率变化率实现对运动目标的无源定位。
Therefor, a single observer passive location method was proposed by using direction of arrival, phase difference rate-of-change, frequency and Doppler frequency rate-of-change in this paper.
毫米波辐射计是一种典型的无源微波探测系统，在遥感和制导中获得了广泛的应用。
Widely used in guidance and remote sensing, millimeter wave radiometer is a typical microwave passive detection system.
警报系统。入侵和滞留系统。第2 - 4部分：组合无源红外和微波探测器的要求。
Alarm systems - Intrusion and hold-up systems - Part 2-4: requirements for combined passive infrared and microwave detectors.
微波辐射计是无源微波遥感的核心设备，是进行地物背景微波辐射特性探测、成像和判断的主要工具。
Microwave radiometer is the core equipment of passive microwave remote sensing and a powerful tool for ground objects radiation detection, imaging and characteristics recognition.
利用非合作照射(如调频广播、电视发射信号)的无源雷达探测技术一直是令人感兴趣的话题。
The passive target detection technique based on the non cooperative illumination (such as FM broadcasting or TV transmission signals) is an interesting subject at all times.
无源毫米波成像技术在战场侦察、反恐探测、安检等军事、民事应用领域具有重要的实用价值。
PMMW imaging technology has been applied widely in military affairs and civil applications such as battlefield reconnoitering, anti-terror detecting and security scanning.
无源毫米波成像技术是通过探测被测场景及目标在毫米波段的自然辐射实现成像的。
Passive millimeter-wave (PMMW) imaging technology forms images by detecting natural occurring millimeter-wave radiation from the scene and targets.
无源雷达由于不发射电磁波，因而不易被敌方侦察系统探测到。
Transmitting no electromagnetic wave, passive radar cannot be detected by hostile reconnaissance system.
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.
对高纯锗探测器无源效率刻度方法的特点、建立方式、方法验证做了介绍。
The efficiency calibration and measurement of coincidence factors of an HPGe detector;
对高纯锗探测器无源效率刻度方法的特点、建立方式、方法验证做了介绍。
The efficiency calibration and measurement of coincidence factors of an HPGe detector;
应用推荐