介绍了一种高性能多通道激励源系统的原理、关键技术及其实现,阐述了激励信号相位稳定性的影响因素、实现手段及测试方法,分析了发射数字波束形成、低杂散和低相噪指标的实现。该系统主要由波形产生和激励通道组成,具有任意波形产生、高幅相一致性和稳定性及便于通道数扩展等特点,尤其适合于中小规模通道数的数字阵雷达。文中提出了激励源系统的主要指标,说明了发射数字波束形成及多通道激励源系统的原理,给出了该系统的设计方案,并分析了时钟和定时的传输管理、信号相位稳定性的实现、发射数字波束形成及低杂散和低相噪指标的实现等关键技术,最后给出了主要指标的测试方法及其测试结果。

The principle, key technology and implementation of a high-performance multi-channel excitation source system is introduced in this paper. The factors influencing the phase stability of the excitation signal, the means of implementation and the test method are mainly discussed. The implementation of transmitter digital beamforming, low spurious and low phase noise are analyzed. This system is mainly composed of waveform generation and excitation channels. It has the characteristics of arbitrary waveform generation, high amplitude-phase consistency and stability, and easy channel number expansion. It is especially suitable for digital array radar with small or medium-scale channel number. First, the main parameters of the excitation source system are presented, and the principles of transmitting digital beamforming and multi-channel excitation source system are explained. Then, the design scheme of the system is given, and the key technologies such as clock and timing transmission management, signal phase stability, transmitting digital beamforming, low spurious and low phase noise are analyzed. Finally, the test methods and results of the main parameters are given.

TN957.51