接收机灵敏度

CDMAPON利用不同的扩频码来实现用户多址接入，由扩频技术带来的扩频增益可有效改善接收机灵敏度。

The CDMA PON employs different spread codes to provide access service for different subscribers . The corresponding spread gain can effectively improve receiver sensitivity .

对于DPSK，DQPSK系统，相位噪声特别是非线性相位噪声是造成接收机灵敏度降低的主要因素之一。

Phase noise , especially the nonlinear phase noise is one of the main factors which cause the receiver sensitivity reduced for DPSK and DQPSK systems .

随后研究了PMD引起的脉冲展宽对接收机灵敏度的恶化以及对接收信号频谱的影响，得出了差分群时延与RF谱分量的关系。

Then discussed the deterioration of receiver 's sensitivity caused by PMD and the effect of PMD on RF spectrum at the receiver ;

用CCITT改良法计算数字光纤接收机灵敏度的通用程序设计

Design of General Software for Calculation of Digital Optic Receiver Sensibility by CCITT Modified Method

前向纠错（FEC）能够较好地提高光网络性能，如增加光通信系统的传输距离，减少光端机发射功率，降低接收机灵敏度等。

Forward error correction ( FEC ) can improve the performance of optical communications systems , for example , increase link distances , reduce transmitter power requirements and improve the sensitivity of the receiver .

SFCW雷达利用较小的瞬时带宽合成较大的工作带宽，能有效提高接收机灵敏度，降低系统实现难度。

Using narrow instantaneous bandwidth to synthesize wide coherent processing bandwidth , stepped frequency continuous wave ( SFCW ) radar is able to improve receiver sensitivity effectively and make it easier for implementation .

与基于开关键控（OOK）调制格式的传输系统相比，基于相位调制格式的传输系统有较高的接收机灵敏度和较大的非线性容限。

The transmission systems based on phase modulation formats have higher receiver sensitivity and larger nonlinear tolerance than the transmission systems based on OOK modulation format . Therefore , the phase modulation formats are very suitable for the upgrade of the transmission systems .

微波接收机灵敏度、现状及展望

Sensitivity of Microwave Receivers , State of the Art and Prospects

提高数字光接收机灵敏度的两种新方法的研究

Two New Methods to Improve the Sensitivity of Digital Laser Receivers

基于IEEE802.15.4接收机灵敏度测试的设计与实现

Design and Realization of Receiver Sensitivity Test for IEEE 802.15.4

虚拟仪器在雷达接收机灵敏度测试中的应用

The Application of Virtual-instrument in the Radar Receiver Sensitivity Measurement

激光告警接收机灵敏度和信噪比分析及实验验证

Analysis and Experimental Verification of Sensitivity and SNR of Laser Warning Receiver

这些结果表明：711&雷达的接收机灵敏度是相当稳定的。

The results show that thereciver of711-radar has high stability in its sensitivity .

文中介绍数字化雷达接收机灵敏度及增益的计算方法。

Calculation method of sensitivity and gain of digital radar receiver is introduced .

任意条件下数字光接收机灵敏度的计算

Sensitivity Calculation for Digital Optical Receiver in Arbitrary Conditions

雷达接收机灵敏度虚拟测试仪

An Virtual Instrument for Testing Sensitivity of Radar Receiver

数字光通信接收机灵敏度计算及信号脉冲占空比的选择

Sensitivity Calculation of Digital Optic Communication Receiver and Duty Circle Determination of Signal Pulse

探测器退化和接收机灵敏度的关系；

Dependence of photodetector degradation on receiver sensitivity ;

数字光接收机灵敏度的研究

Research on Digital Optical Receiver Sensitivity

噪声是影响雷达接收机灵敏度的重要因素。

Noise is one of the most important factors that influence the sensitivity of the radar receiver .

提出了伪码调相引信实验干扰源系统方案，包括干扰源系统的干扰样式、接收机灵敏度和干扰功率的大小。

It includes mainly that jamming mode , receiver sensitivity and jamming power of experimental jamming source .

重点分析了接收机灵敏度和系统电平余量这两项指标。

Firstly , the concepts of receiver sensitivity and system electrical level allowance in communication system are briefly introduced .

啁啾高斯光脉冲和群速度色散对带前置放大器光接收机灵敏度的影响研究

Study on effect of Gauss light pulse with chirp and GVD to the sensitivity of receivers with an optical preamplifier

接收端的检测方式有外差检测和零差检测两种，都比常规直接检测有较高的接收机灵敏度。

There are two kinds of detection schemes : heterodyne and homodyne detection , they provide higher receiver sensitivity than direct detection .

该文还分析了电压测量参数、接收机灵敏度、发射机功率等系统测量参数。

The thesis analyze voltage measurement parameter , sensitive degree of receiver , power of transmitter . This system has used in the equipment of measurement and control detector .

低噪声放大器在接收系统中能降低系统的噪声和提高接收机灵敏度，是接收系统的关键部件。

The low noise amplifier ( LNA ) can reduce the system noise and improve the receiver ′ s sensitivity , it is the key-part in the receive system .

系统采用超外差式变频结构设计，两级低噪声放大单元级联保证了接收机灵敏度，两级增益控制单元实现了所要求的接收机动态范围，并且整机的线性度也得到了保证。

The high-intermediate-frequency superheterodyne structure is adopted in the final scheme . The fine sensitivity of the receiver is achieved by two cascaded LNA in the front of the system .

研究了啁啾高斯光脉冲信号对带前置放大器光接收机灵敏度的影响，以及群速度色散对光接收机灵敏度恶化量的影响。

Effects of Gauss light pulse with chirp on the sensitivity of receivers with optical preamplifiers and of GVD on the power penalty of the sensitivity of optical receivers is discussed .

这部分参数主要包括发射天线的增益、发射机功率、接收天线增益和接收机灵敏度。

In this part , parameters mainly include the gain of transmitting antenna , the power of the transmitter , the gain of the receiving antenna and the sensitivity of the receiver .

激光雷达系统的作用距离由下列因素决定：脉冲能量、脉冲宽度、光束发散角、大气衰减、目标反射率和接收机灵敏度等。

The operating distance of a laser radar system is determined on pulse energy , pulse width , beam divergence angular , atmosphere attenuation , target reflection , receiver sensitivity and so on .