space echo 中文意思是什麼
space echo
解釋
太空防衛-
From the result we get the following conclusion : for narrow - band signal, the effect of the method based on fft is best. for wide - band signal, when snr is up to certain degree ( higher than - 7db or so ), the curves of square error of modified methods are more obvious and closer to crb. for an echo composed of more than one frequency or direction, space - frequency distribution could show more direct information of frequency and direction, which is more advantaged to make precise judge and estimation for doa of echo
從估計結果發現，對于窄帶回波信號，基於fft的方法估計性能大大優于其他方法；對于寬帶回波信號，在信噪比達到一定程度（高於約- 7db ）時，補償后的幾種估計法的性能改善均比較明顯，誤差曲線越來越接近crb曲線；對于回波中存在多頻率多方位的情況，空間?頻率分布圖能提供較為直觀的頻率及方位信息，因此應用空間?頻率估計法來進行方位估計，更有利於進一步對回波的具體方位進行準確判斷和估計。 -
The voice of beat hull would throw back from seabed ; determine the space between beat hull and take - over echo may measure the deepness of ocean at the location
擊拍船體的聲音會從海底反射過來，因此測定擊拍聲和接收回聲之間的進間間隔，就能測算出那一位置上的海洋深度。 -
This paper is intended to discussion mainly focusing on the six points : the space layout of the garden ; the environmental design, exemplified nature and architecture, the outer and interior decorations in the overall composition ; the guiding principle of gardening, propagating the philosophical view of the confusions " marriage of the soul with nature " ; the dialectical thoughts value added to principle elements of gardens, such as inspired by nature, suitable measurement to local condition, showing and hiding, density and spacing, far and near, ideology guiding practice. . the gardening elements of unity and coherence of space which is mutually penetrated ; the gardening elements of space alignment, such as " views echo with one another, scenes appear at every turn " generally, from the angle of space designing, the paper is trying to provide materials data for understanding and studying for suzhou classical gardens, their imagination - inspiring atmosphere, superb artistry, rich cultural contents as well as gardening artistic characteristics
蘇州園林作為一門空間藝術具有獨特的魅力，作為文化載體，它積淀了豐厚的文化底蘊。本文主要就其庭院式的空間布局，建築與自然、室內與室外融為一體的環境設計；充滿人文精神的中國儒道「天人合一」的造園思想；因地置宜、順應自然、藏露疏密、虛實遠近、變化統一的辯證思維；相互滲透的空間層次，步移景移的時空間序列的表現手法等問題進行闡述。力求從蘇州園林空間設計的一個側面，去揭示其藝術的特徵、文化的內涵、造園的藝術規律。 -
Then the paper dicusses the implemention of the modem based on dsp, describes the parts of the modem, design and implement the circuit of the modem ' s echo cancek ring detection -, status supervise and power supply after the detailed research on the dsp ' s performance ? function, memory space and work mode. studies the device driver of the ppsm, develops the modem ' s driver, includes the idma read and write, download page, event handle, send data and receive data
隨后，論文論述基於dsp的modem的設計，對modem的總體結構進行了描述，在對系統使用的dsp晶元adsp2187的性能、功用、存儲器空間和工作模式作了細致研究后，設計和實現了modem的回聲抑制、振鈴檢測、狀態監測和電源等硬體電路，並對ppsm操作系統下外設的驅動程序進行了研究，開發了ppsm下modem的驅動程序，包括idma讀寫、下載頁面、事件處理、發送和接收數據的程序。
分享友人