step frequency造句
例句與造句
- Transmiting beamforming of stepped frequency signals for the uniform circular array
基于均勻圓陣的步進(jìn)頻率信號發(fā)射波束形成 - In chapter 2 , high range profile using stepping frequency signal is first introduced
第二章首先分析了階躍變頻高分辨體制下目標(biāo)的距離像。 - The imaging of target range profiles of step frequency mmw radar based on spectrum estimation with wavelet transformation
基于子波變換譜估計的頻率步進(jìn)毫米波雷達(dá)目標(biāo)成像 - Abstract : in this paper , we study the application of wavelet transforming for target of step frequency mmw radar
文摘:研究子波變換在頻率步進(jìn)毫米波雷達(dá)目標(biāo)識別中的應(yīng)用。 - Hereby , this dissertation present system project with chirp - subpulse stepped frequency signal in
據(jù)此,提出了chirp子脈沖頻率步進(jìn)信號在低空動目標(biāo)檢測應(yīng)用中的系統(tǒng)實(shí)現(xiàn)方案。 - It's difficult to find step frequency in a sentence. 用step frequency造句挺難的
- In order to obtain high range resolution , the chirp signal is used as subpulse to form stepped frequency modulated radar signal
摘要為了獲得高距離分辨率，將線性調(diào)頻信號作為子脈沖構(gòu)成調(diào)頻步進(jìn)雷達(dá)信號。 - It can meet the requirements under the condition without loads . the working stroke is 6mm . and the stepping frequency is 300times / minute
在空載的情況下，已基本能達(dá)到所要求的性能，其工作行程可達(dá)6mm ，步?jīng)_頻率可達(dá)300次分。 - Chirp - subpulse stepped frequency signal is one of the high distance resolution signals with merits of stepped - frequency signal and chirp signal
Chirp子脈沖頻率步進(jìn)信號兼有頻率步進(jìn)信號和線性調(diào)頻信號的優(yōu)點(diǎn),是一種高距離分辨力信號。 - A two - dimensional microwave imaging system in x band with stepped frequency signal and real aperture antenna is established . two - dimensional super - resolution algorithm is applied in this system
本文圍繞實(shí)孔徑微波成像系統(tǒng)，在提高系統(tǒng)的角度分辨率、二維超分辨處理和基于強(qiáng)散射中心分布的rcs數(shù)據(jù)壓縮等方面進(jìn)行了研究。 - This dissertation analyses problems of profile aliasing and redundance in chirp - subpulse stepped frequency signal , points out that these problems are resulted from different parameters of chirp - subpulse stepped frequency signal
還對chirp子脈沖頻率步進(jìn)信號中距離像的混疊和冗余問題進(jìn)行了分析,指出這些現(xiàn)象是chirp子脈沖頻率步進(jìn)信號對不同參數(shù)的選取引起的。 - And the waveform of the transmitted signals was designed based on the target distance ( 5 ~ 50m ) . the waveform is triangular fmcw with central frequency at 6ghz , modulation bandwidth 100mhz , modulation period 10 s , step frequency 0 . 2mhz , and step time 10ns
在此基礎(chǔ)上,設(shè)計發(fā)射信號波形參數(shù)為三角形調(diào)頻連續(xù)波,中心頻率6ghz ,調(diào)制帶寬100mhz ,調(diào)制周期10 s ,步進(jìn)頻率0 . 2mhz ,步進(jìn)時間10ns 。 - This dissertation summarizes the method to select parameters of chirp - subpulse stepped frequency signal , presents a method to resolve profile aliasing and redundance in chirp - subpulse stepped frequency signal by the target pick - up algorithm and selecting parameters
文中總結(jié)了chirp子脈沖頻率步進(jìn)信號參數(shù)選取的方法,提出了采用參數(shù)選取和目標(biāo)抽取相結(jié)合的方法來解決chirp子脈沖頻率步進(jìn)信號中距離像的混疊和冗余問題。 - Take integrity of object information into condition , a two - dimension signal processing method which can make a measurement of the target ’ s speed as well as the range is brought forward at the basis of waveform parameter design . and simulation in the background of hf multi - object with noise is taken . a comparison of signal properties , processing and antinoise detection performance is taken between mcpc and another two high range resolution radar signals : single carrier pulse coded signal and step frequency pulse coded signal
考慮到目標(biāo)信息提取的相對完整性,以高頻雷達(dá)為背景,在對多載波相位編碼脈沖串信號參數(shù)設(shè)計的基礎(chǔ)上,推導(dǎo)了三種多載頻相位編碼脈沖串信號的距離速度二維處理過程并相應(yīng)的對多目標(biāo)噪聲環(huán)境進(jìn)行了仿真;將多載波相位編碼信號與另外兩種距離高分辨信號:單載頻相位編碼信號和相位編碼階梯跳頻信號,在信號特性、處理過程和抗噪聲特性方面進(jìn)行了對比;本文從理論上為多載波相位編碼信號的波形設(shè)計和分析、信號的處理打下基礎(chǔ)。 - First , this dissertation analyses the waveform of chirp - subpulse stepped frequency signal , studies and simulates the ambiguity characteristics , the spectrum structure and the basic process to obtain high resolution range profiles , and discuss this signal ’ s high range resolution characteristic and wide spectrum characteristic
首先,本文對chirp子脈沖頻率步進(jìn)信號進(jìn)行了波形分析,研究了chirp子脈沖頻率步進(jìn)信號的模糊特性、頻譜結(jié)構(gòu)以及合成高分辨距離像的基本過程,討論了chirp子脈沖頻率步進(jìn)信號的高距離分辨力和寬帶頻譜特性。 - The cnc turret press is a kind of computer controlled flexible sheet punch processing equipments . in addition to the characters of traditional cnc turret press , the hydraulic cnc turret press has the characters of high stepping frequency , simple structure , easy maintenance , safety and reliability , it has been applied more and more extensively at home and abroad
數(shù)控回轉(zhuǎn)頭壓力機(jī)是由計算機(jī)控制的柔性板材沖壓加工設(shè)備，液壓傳動式數(shù)控壓力機(jī)除了具備傳統(tǒng)數(shù)控壓力機(jī)的特點(diǎn)外，還具有步?jīng)_頻率高、結(jié)構(gòu)簡單、維護(hù)簡單、安全可靠等特點(diǎn)，在國內(nèi)外得到了越來越廣泛的應(yīng)用。
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