in order to keep investment and economic fluctuations in benign cycle the practical range of 4.5-9.6 % . correspondingly, investment growth-rate fluctuates in 17-23 % 为保持我国投资与经济波动处于良性循环。保持我国经济处于良性循环,最重要的是使经济在可运行区间内波动。
main contents included are : 1 . analyzed, simulated and validated the effect of power fluctuation and the nonlinearity in frequency sweep on radar practical ranging precision, and the validating method of nonlinearity in frequency sweep 主要内容为:1.分析、仿真并验证了扫频非线性对雷达实际测距精度的影响、扫频非线性的校正方法。
ftt makes the frequency sampled at a same frequency interval on unit circle, and the frequency interval limits the practical range-precision of the radar, and makes range precision at an equivalent level with range-resolution 由于fft的实质是频率在单位圆上的等间隔采样,其采样间隔限制了雷达的实际测距精度,使得其测距精度与其距离分辨力处于同一量级。