This paper presents a new wideband digital beamforming method using subarrays and Linear Frequency Modulation ( LFM ) signal .

该文在基于子阵和发射为线性 调频信号的前提下，提出一种 宽带子阵数字波束形成方法。

We detect signal in three way namely linear spectrogram detection ~ wideband energy detection and modulation detection .

信号检测包括窄带检测、 宽带检测和 调制检测等，同时对各检测方法进行了 仿真。

Wideband chirp modulation techniques of laser are studied in this thesis .

本文对激光 宽带线性 调频技术进行了研究。

Because of the excellence performance and high spectral efficiency the usage of Orthogonal Frequency Division Multiplexing ( OFDM ) in wideband HF communication have received extensive attention from worldwide scholars and hence become the main modulation schemes .

OFDM由于性能优越和频谱利用率高，在 宽带短波通信中的应用受到各国学者的关注，并成为宽带短波通信技术的主要 调制方式。

To deal with broadband signal processing a new algorithm for the Direction Of Arrival ( DOA ) estimation of wideband Linear Frequency Modulation ( LFM ) signal was introduced .

为了解决宽带信号处理的问题，研究了一种 宽带线性 调频（LFM）信号的波达方向（DOA）估计方法。

The simulator can generate signals of wideband target typical clutter and deceptive jamming accurately which reflect the characteristics of radar target electromagnetic scattering and the modulation features of radar transmit signal within the pulse width .

该系统能够准确地产生反映雷达目标电磁散射特征和雷达发射信号脉冲宽度内 调制特征的 宽带 雷达目标信号、典型的杂波信号与欺骗干扰信号。

Wideband frequency modulation technology is one of the key technologies in satellite communications .

宽带 调频技术是卫星通信技术中的关键技术之一。

Calibration and Compensation of Wideband Digital Vector Modulation Channel

宽带数字矢量 调制通道的校准与补偿

It additionally analyzes the measures to improve the frequency spectrum utilization ratio such as orthogonal frequency division multiplexing ( OFDM ) ultra wideband ( UWB ) space-time modulation and coding Ad hoc network and trans-layer network optimization .

探讨了提高频谱利用率的措施，如OFDM、 UWB、空时 调制编码、adhoc网络和网络跨层优化设计。

Two kinds of typical wideband signal Line Frequency Modulation ( LFM ) signal and Hyperbola Frequency Modulation ( HFM ) signal is analyzed qualitatively with WAF . Then the author obtain Doppler tolerant signal and time-scale combine resolution signal .

以 宽带模糊度函数为工具对线性 调频信号和双曲调频信号在多径环境中进行了定性的分析，获得了多普勒宽容信号和时延尺度二维联合分辨信号。

To introduce the analysis of mobile wideband wireless system performance based on system architecture modulation techniques and radio propagation effect .

行动 宽频通讯架构， 调制技术及系统性能分析介绍。

The paper uses the wideband linear frequency modulation signal to measure the transport time of the signal . And with the receiver and transmitter this system realized reception and transmission of the wideband linear frequency modulation signal .

在该系统中，采用了 宽带线性 调频信号进行时间的测量，并在应答器上实现了宽带线性调频信号的接收和发射。

We propose a Turbo coded Ultra wideband ( UWB ) system with parallel modulation . The proposed system employs Turbo codes as forward error correcting codes and a set of orthogonal Hermite pulses modulated parallel data respectively .

提出了一种 高速 率数据传输的并行 调制Turbo编码的 UWB系统，系统采用Turbo码进行前向纠错，使用一组正交的Hermite脉冲对各并行支路信号进行调制。

The Influence of the Wideband Modulation over Fast Fading in TDMA Cellular Systems

宽带 调制对TDMA蜂窝系统中快衰落的影响

To support this wideband feature the PHY adopts various modulations and FEC technologies including randomization RS-CC encoding interleaving multiple digital modulation OFDM and the optional space-time coding .

其物理层协议为支持这 一高 带宽特性集合了多种调制和信道编码技术，包括随机化、RS-CC编码、交织、多种数字 调制 技术、OFDM技术，还有可选择采用的空时编码技术。