在这些情况下，可向开关加入滤波器来改变信号的频率带宽，或者从发射到DUT的信号中消除有害频率的杂散信号。
In these cases, filters can be added to the switch to modify the signal frequency bandwidth, or spurious signals at unwanted fre quencies can be eliminated from the signal to the DUT.
因此您需要合适的测试设备与测试方法，来准确捕获雷达回波和杂散信号，进行雷达发射机及接收机指标测试，同时评估系统的抗干扰性及其他电路指标。
Suitable test system and method are need toaccurately capture and analyze the echo and clutter, even to test transmitterand receiver of Radar, and estimate the anti-jamming of Radar.
研究结果表明，优化后，红外光学系统的有效发射率明显降低，系统杂散辐射性能得到明显提高。
The results indicate that the effective emissivity of the infrared optical system after optimization and the stray radiation performance are greatly improved.
研究结果表明，优化后，红外光学系统的有效发射率明显降低，系统杂散辐射性能得到明显提高。
The results indicate that the effective emissivity of the infrared optical system after optimization and the stray radiation performance are greatly improved.
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