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本文分析了脉冲相参应答机本地振荡器的相位噪声、系统热噪声、电源波纹引起的末级功率放大器相位抖动等因素对单脉冲相参雷达测速精度的影响,导出了测速误差与脉冲相参应答机参数的数学表达式。这些表达式物理概念清楚,计算和测量方便,可作为单脉冲相参雷达系统设计、脉冲相参应答机设计及选择器件时参考。
In this paper, the influence of the phase noise of the local oscillator, the thermal noise of the system, the phase jitter of the final power amplifier due to the power ripple on the speed accuracy of the single pulse coherent radar is analyzed, and the relationship between the velocity error and the pulse coherence Mathematical expressions for answering machine parameters. These expressions have a clear physical concept and are easy to calculate and measure. They can be used as a single-pulse coherent radar system design, pulse coherent answering machine design and reference when selecting devices.