基于单脉冲跟踪体制的V频段宽带角跟踪 接收机设计与验证

随着高通量通信卫星系统对星间数据传输速率需求的不断提高，星间链路的工作频段将由Ka频段逐渐向频率资源更加丰富的毫米波频段发展。为了满足星间链路对毫米波频段自动角跟踪系统的发展应用需求，给出了一种基于单通道单脉冲角跟踪技术的V频段宽带角跟踪接收机的设计方案。采用LTCC和MCM技术实现了V频段接收组件的集成一体化设计；采用基于IQ正交混频的跟踪调制器结合数字相位补偿的单通道单脉冲角误差信号处理技术完成了宽带输入信号的角误差信号解调。在产品研制基础上，搭建了V频段角跟踪接收机测试系统，测试结果表明该V频段宽带角跟踪接收机可以完成对-95dBm~-55dBm输入信号电平范围内多种宽带数据传输信号的角误差信号解调，角误差信号抖动优于±250mV；表征输入信号电平强弱的AGC遥测电压随输入信号电平的增大而单调递增，各项指标满足V频段星间链路建链需求，为我国后续将要发展的毫米波星间链路系统奠定了扎实的技术基础。

Design and verification of a V band wideband angle tracking receiver based on monopulse tracking system

With the increasing demand of high throughput communication satellite system (HTS) for inter-satellite data transmission rate, the working frequency band of inter-satellite link will gradually develop from Ka frequency band to millimeter wave band with more abundant frequency resources. In order to meet the development and application requirements of the millimeter wave band automatic angle tracking system for inter-satellite links, a design scheme of V-band wideband angle tracking receiver based on single-channel monopulse-angle tracking technology is presented. LTCC and MCM technologies are used to realize the integrated design of V-band receiving components. The angle error signal demodulation of wideband input signals is completed by using a tracking modulator based on IQ orthogonal mixing and a single channel single pulse Angle error signal processing technology based on digital phase compensation.On the basis of single machine development, the test system of V-band angle tracking receiver is built. The test results show that the V-band wideband angle tracking receiver can complete the demodulation of various wideband data transmission signals within the input signal level range of -95dBm~-55dBm, and the Angle error signal jitter is better than ±250mV. AGC telemetry voltage, which represents the strength of the input signal level, increases monotonically with the increase of the input signal level. All these indicators meet the requirements of V-band inter-satellite link construction, which lays a solid technical foundation for the future development of inter-satellite link system in millimeter wave.