调频

SAR成像中一种改进的最小熵多普勒调频率估计算法

An Improved Estimation Algorithm of Minimum Entropy Doppler Frequency Modulation Ratio in SAR Image

介绍了CPLD在调频式位移传感器测量系统中的一种应用。

One application of CPLD in the measuring system of using frequency modulation displacement sensor is introduced .

我们以调频95.9播音。

We broadcast on ninety-five point nine FM .

这里是调频立体声103.7。

This is FM stereo one oh three point seven

基于DSP的调频调宽式升压斩波器研究

Research on Variable-frequency Variable-wide Chopper of Rising Voltage based on DSP

X波段雷达线性调频脉冲压缩信号仿真研究

Simulation Study for Linear Frequency Modulated Pulse Compression Signal of X-band Radar

线性调频CO2相干激光雷达的一种脉冲压缩方法

A Method of Chirp Signal Processing for CO_2 Coherent Radar

X波段固态调频雷达在半潜式钻井平台上的试验和应用

Experiments and applications of X-band FM-CW radar system on semi-submerged drilling well platforms

调频连续波SAR回波模拟研究

A Research on Echo Simulation of Frequency Modulated Continuous Wave SAR

为满足波形参数要求，本文设计了DDS+倍频+上变频的C波段三角形调频连续波频率源。

To meet the waveform requirements , DDS + Multiplier + Upconverter was used to realize the C-band FMCW frequency source .

步进线性调频脉冲串SAR实时成像算法在多DSP平台上实现的研究

Research and Realization of Real-Time Parallel Processing of SAR LFM Burst Algorithm on Multi-DSP Platform

双光子泵浦可调频GaAs微微秒激光器

Two photon pumped tunable picosecond GaAs lasers

AGC机组是调频服务的主要提供者。

AGC units are the main suppliers for load frequency control .

线性调频脉冲（chirp）信号扫频

Frequency Sweep Using Linear Frequency Modulated Pulses ( Chirp ) Signal

符合FCC标准的单片调频调幅电路的研发

Research and Development of a Monolithic AM / FM Circuit up to FCC Standard

线性调频信号DDS频率合成源的设计与实现

Development of DDS Digital Synthetic Frequency for Chirp Signal Generation

DDS调频转换速率对脉冲压缩性能的影响

Influence of DDS Chirp - rate in Pulse Compression

线形调频DDS及其误差分析

The generation of chirp with DDS and error analysis

且使用解调频技术与RAT相配合，解决了单纯RAT无法估计Chirp信号初始频率的问题。

The problem of estimating the initial frequency of the Chirp signal simply by the RAT method can be solved too .

基于STFT的相干宽带调频信号2-D到达角估计

2-D DOA Estimation of Coherent Wideband FM Signals Based on STFT

基于EDA技术的调频信号发生器的设计

Design of Frequency Modulation Signal Generator on EDA

利用四参数Chirplet分解方法估计SAR多普勒调频斜率

Estimation of SAR Doppler Rate Using Four-Parameter Chirplet Decomposition Method

针对线性调频续波SAR的特点，在StopandGo近似成立的条件下，讨论距离徙动算法的实现过程。

Aiming at the characteristics of LFM CW SAR , how range migration algorithm ( RMA ) is implemented is discussed based on STOP AND GO approximation .

在SAR成像中，MD算法是一种对多普勒调频斜率进行估计的自聚焦处理过程。

Mapdrift algorithm is an autofocusing processing which can get correct Doppler frequency modulation slope in SAR processing .

基于去调频宽带LFM信号的二次距离压缩算法及其实时实现

SRC Imaging Method of De-chirped Broadband LFM Signal and Its Real Time Implementation

采用FPGA实现了线性调频连续波信号源的实时数字式闭环线性校正网络，利用SYSTEMVIEW完成了系统的仿真，并用VHDL完成了软件的设计。

The FPGA is used to implement real-time digital closed loop linear revise network , and use System View to simulate system , then design software with VHDL language .

本文就全国服务性节目联网提出了一个FM调频多工同步广播方案，并论证了方案的可行性。

The essay puts forword FM multi-functions synchronism broadcasting scheme , and demonstrates the possibility of the scheme .

ENSO事件对中高纬大气低频振荡的调频作用

Frequency Modulation Effect of ENSO Events on Atmospheric Low-frequency Oscillations in the Extra-tropical Latitudes

首先，通过对信号模糊函数进行Radon变换获得各分量的调频系数。

First , It estimates the frequency-modulated coefficients by performing Radon transform to the ambiguity function result of the LFMs .

研究了单分量线性调频（LFM）信号的检测问题。

The detection problems of single-component linear frequency modulation ( LFM ) signal are studied .