但是，包含外部噪声、各种不同杂波和干扰的信号环境将大大限制探测性能和系统能力。
But the signal environment that includes external noise, different kinds of clutter and interference will significantly limit the detection performance and system capability.
在实际的雷达检测环境中，杂波、热噪声等产生的干扰功率通常是未知的。
In a realistic radar detection scenario, the disturbance power generated by thermal noise and clutter is unknown.
本文研究的雷达视频回波信号模拟与仿真是针对机载下视脉冲多普勒雷达，包括目标信号、地杂波信号和噪声信号的模拟与仿真。
In the thesis, the video echo of the airborne PD radar was simulated. The simulated echoes include the signals of the target, the ground clutter and the noise.
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