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 % 為保持我國投資與經(jīng)濟波動處于良性循環(huán)。保持我國經(jīng)濟處于良性循環(huán),最重要的是使經(jīng)濟在可運行區(qū)間內(nèi)波動。
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 主要內(nèi)容為:1.分析、仿真并驗證了掃頻非線性對雷達實際測距精度的影響、掃頻非線性的校正方法。
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的實質(zhì)是頻率在單位圓上的等間隔采樣,其采樣間隔限制了雷達的實際測距精度,使得其測距精度與其距離分辨力處于同一量級。