| 释义 |
LFMCOCA¹⁴³⁹²²BNC¹⁰⁴⁵⁸⁴⁺⁶
基本例句
n.纵尺/分钟⁵⁰低频调制;低的品质因数⁵⁰
In addition, based on FFT and remainder algorithm, the modulation rate and initial frequency of sub-sampling UWB LFM signal are estimated unambiguously in negative SNR.
该方法通过 FFT和余数定理解频率模糊，解决了负信噪比条件下超宽带线性调频信号调制斜率和初始频率的估计问题。 cnki
In this paper, the digital generation methods and the implementation techniques for Ultra wideband LFM baseband signals are introduced.
介绍超宽带线性调频信号基带的数字产生方法及其实现技术。 cnki
The limit of the range resolution of a LFM radar depends on the bandwidth of transmitted waveform.
线性调频雷达的极限分辨力取决于发射波形的带宽。 cnki
The support vector clustering SVC algorithm was introduced to detect linear modulation frequency LFM signal and estimate its parameter.
文中引入支持向量聚类 SVC算法对多分量 LFM信号进行检测和参数估计。 dictall
The LFM signal has a high resolution of range and speed, as well as low probability of intercept.
LFM信号具有更高的距离、速度分辨率，以及更好的低截获概率特性。 cnki
A new method LFM in direct digital frequency synthesizing DDS based on CORDIC algorithm is introduced in this paper.
本文介绍了一种应用 CORDIC算法的线性调频直接数字合成 DDS的实现方法。 iciba
A new method to produce high- linear, low- spurious and wide-band LFM radar wave signal is proposed.
研究了一种高线性度、低杂散宽带 LFM雷达波形信号的实现方法。 cnki
A screen method carried out to ascertain The place and the number of independent elements in The sequence which may be used to Realize LFM signal digitally.
导出了计算该序列独立元素的个数和确定独立元素位置的方法——独立元素筛选法，从而为实现数字线性调频信号提供了依据。 cnki
Analyzed the linear degree of LFM signal based on DDS technology;
分析了 DDS产生的线性调频信号的线性度； cnki
Compared with conventional interference mode, the interrupted- sampling and repeater jamming ISRJ is more effective for LFM radar, because of using matching filter characteristic smartly.
相比于传统的干扰样式，间歇采样转发干扰能够巧妙利用脉压雷达的匹配滤波特性，对线性调频脉压雷达产生更有效的干扰。 dictall
Compared with the performance of normalized single pulse signal and linear frequency modulation signal LFM, a new method is presented.
从归一化的单脉冲信号和 LFM信号性能比较分析入手，提出了一种新的分析方法。 cnki
In this paper the working principle of the LFM pulse compression radar, and the principles of shift frequency jamming and convolution jamming are analyzed.
本文分析了线性调频脉冲压缩雷达的工作原理、移频干扰原理和卷积干扰原理。 dictall
It obtains its high resolution in range by transmitting LFM signal and that in aspect by utilizing the Doppler information among the pulsed echoed signal.
它通过发射线性调频 LFM的脉冲压缩信号实现距离上的高分辨率，利用脉冲之间的多普勒信息获得方位上的高分辨率。 magsci
Linear frequency modulation LFM signals are often used in sonars.
线性调频 LFM信号是声呐中一种常用信号。 cnki
SAR point target echo simulator which based on DDS chirp signal generator is introduced; it is composed of ARM controller unit and LFM signal generator unit.
设计并实现了基于直接数字合成技术 DDS的 SAR系统点目标回波模拟源，该模拟源主要包括 ARM控制单元和 DDS线性调频信号源两个部分。 dictall
Study the pulse compression performance in range imaging, simulate the pulse compression processing of LFM signals and realize it on HHPC.
在距离向的脉冲压缩处理性能研究过程中，对 LFM信号脉冲压缩过程进行了仿真，并在 HHPC上实现。 cnki
The simulation test shows this algorithm performs well for the LFM echo of moving target with unknown radial velocity under reverberation background.
仿真测试表明，该算法对于混响噪声背景下径向速度未知动目标的线性调频回波具有良好的检测性能。 cnki
The simulation results in several conditions give references to select reasonable sampling rate in Broadband LFM signal digital pulse compression.
通过较全面的仿真，为宽带 LFM信号数字脉压的工程应用中合理选择采样率提供了参考。 cnki
This paper introduces the design of a wide band LFM signal generator based on AD9954 and AD8349.
介绍了一种基于 AD9954和 AD8349的宽带线性调频信号源的设计。 dictall
This technique uses different time delay values of the LFM pulse to code the transmitted information, and uses time delay estimation technique to perform decoding.
该技术利用线性调频信号 LFM矩形脉冲的时延值进行时延编码，在接收端采用时延估计技术进行时延解码。 cnki
With the LFM pulse frame synchronization method, the performance of UWA communication system based on DPSK is apparently improved.
同时运用线性调频脉冲帧同步法，改善了基于差分相移键控的水声数字通信系统的性能。 cnki
LFM signal will likely become the main signal form in underwater target strength broadband test.
线性调频信号可能将成为水下目标强度宽带测试的一种主要信号形式。 dictall |