脉间

pvx在许多品种上表现脉间花叶。

In many varieties PVX evokes an interveinal mosaic .

不规则边缘和脉间区开始黄绿色，接着全部脉间失绿，并有大量褐色坏死斑点，最后枯萎。也是典型的田间情况。

Irregular marginal and interveinal yellow green chlorotic areas , followed by general interveinal chlorosis and profuse brown necrotic spotting and scorching , typical also of field conditions .

脉间二相编码雷达高度表信号处理器的设计及FPGA实现

Design and FPGA Implementation of Signal Processor for Pulse to Pulse Bi-phase-coded Radar Altimeter

双通道脉间变频外场RCS测试雷达的研究

Research on Two-Channels Pulse to Pulse Frequency Shifting Outdoor RCS Measurement Radar

目标速度对脉间变频格式RCS测试的影响

Object 's velocity effect on pulse to pulse frequency shifting RCS measurement

双通道脉间变频格式RCS测试系统

Design and Realization of Two-Channel Pulse to Pulse Frequency Shifting RCS Testing System

脉间CostasFH高分辨毫米波雷达信号的DDS实现

Implementation of inter-pulses Costas FH high resolution MMW radar signal using DDS Technology

HRR脉间变频外场RCS测试设备的简化设计

Simplified Design of High Range Resolution Pulse to Pulse Frequency Shifting Outdoor RCS Measurement Device

基于脉间调制斜率交变的MTI对消方法研究

A study on the MTI cancellation method based on pulse-to-pulse alternation of modulation slopes

研究了在脉间变频格式目标雷达散射截面（RCS）测试中目标径向速度对测试结果的影响。

Object 's radial velocity effect on object 's radar cross section ( RCS ) outdoor measurement with pulse to pulse frequency shifting radar was researched .

提出了脉间非相干积累、扫描间积累、CFAR、杂波图CFAR等实现抗海杂波信号处理方法。

Noncoherent integration of pulses , integration between scans , CFAR and clutter map CFAR of anti-sea clutter signal processing way is put forward .

缺硼使叶重比（LWR）提高和叶片脉间失绿、变厚、变脆。

The boron deficiency plant appears inter-venial chlorosis , thickening , crisping leaves and increased leaf weight ratio ( LWR ) .

介绍了一种高分辨率雷达信号（脉间CostasFH信号）和直接数字合成（DDS）技术。

A kind of high resolution radar signal ( inter pulses Costas freguency hopping , or Costas FH ) and a kind of direct digital synthesis ( DDS ) technique were introduced .

基于合成孔径雷达（SAR）发射脉冲信号的脉间相参性，该文提出通过测量分析SAR方位向线性调频信号特征的方法，获取目标SAR的距离等信息。

Based on the phase correlativity between pluses of Synthetic Aperture Radar ( SAR ), a new observation method is presented . By the method the SAR 's location information can be obtained from the characteristics of the observed azimuth chirp signals of SAR .

分析和对比了两种常用的HRR脉间变频外场RCS测试设备的设计方法，针对脉间变频格式RCS测试一维成像的特点提出了一种简化设计的思路。

Two usual designs of High-Range-Resolution pulse to pulse frequency shifting RCS outdoor measurement device are analyzed and compared . A simplified design is presented point to the peculiarity of the pulse to pulse frequency shifting RCS measurement One-Dimension imaging .

实验结果表明：在等温层信道中，目标距离较远、目标相对速度较低的情况下，海上目标回波脉间相关系数在70%左右，至少在10s内时间中，可以保持较强的相干性；

Experimental result shows that under condition of isothermal layer channel , long distance and low target speed , target pulse-pulse echo correlation coefficient is about 0.7 , for a stable time of about 10 s.

给出了脉间CostasFH信号与步进频率脉冲雷达信号的统一表达形式，以及用频率挑选矩阵从DDS所产生的信号集合中产生脉间跳频信号的方法。

A uniform expression of inter pulses Costas FH radar signal and stepped frequency pulsed radar signal was presented . A method to generate Costas FH radar signal from the signal set produced by DDS using so called " frequency selecting matrix " was also presented .

脉间伪随机二相码与线性调频复合调制探测系统

Inter-pulse Pseudo-random Binary-phase Code and Linear Frequency Modulation Combined Detecting System

基于脉间码型捷变的相位编码旁瓣抑制方法

Sidelobe Suppression of Phase-Coded Radar Signal Based on Interpulse Code Agility

用于脉间码捷变脉冲压缩雷达的低旁瓣m序列码

A Low Sidelobe m-Sequence Code Set for Pulse Compression Radar

高距离分辨率脉间频率步进系统的探讨

The Discussion of High Range Resolution Stepped-Frequency Pulse Trains System

利用脉间跳频和信号增强技术实现低信噪比下雷达距离超分辨

Range super-resolution at low SNR via interpulse frequency hopping and signal enhancement

它用于测量雷达脉间相位噪声。

It is used to measure pulse-to-pulse phase noise of radar signal .

随机二相码脉间调制雷达信号分析

Analysis on Random Binary Phase Coded Interpulse Modulated Radar Signal

水下高频目标回波的脉间相关和复本相关特性实验研究

Pulse-pulse Correlation and Copy Correlation Characteristics Experimental Research on Underwater High Frequency Echo

基于脉间频率步进信号的高频地波雷达回波信号处理

Processing of Step Frequency Signal in a High Frequency Ground Wave Over-the-Horizon Radar

基于目标宽度特征的脉间跳频雷达距离精确成像

High Precision Range Imaging of Pulse Stepped Frequency Radar Based on Target 's Feature

基于谱相关的正弦调频和脉间伪码调相复合体制侦察信号识别

Signal Recognition of Sine FM and Interpulse Pseudo Code PM Based on Spectral Correlation Method

水中目标回波亮点时空相关与脉间相关特性研究

Study on Spatial-Temporal Correlation and Pulse-Pulse Correlation Feature of High Frequency Echoes From Underwater Target

脉间随机捷变频状态下运动目标回波特征分析

Analysis of Echo Signal Characteristic of Moving Target in The State of Pulse-to-pulse Random Frequency Agility