脈沖壓縮法 的英文怎麼說
中文拼音 [màichōngyāsuōfǎ]
脈沖壓縮法
英文
pulse compression method-
Based on the theory of pulse compression, the essentiality of lfm signal is discussed
首先介紹了線性調頻信號脈沖壓縮的實現方法。The main research works of this dissertation are aimed to design of radar waveform and the application of wavelets in ultra - wide radar, including : the design of a new kind of hybrid radar and the research of time side - lobe suppression for pulse compression, the design of receiver r adio front end in data acquisition of ultra - wide band radar, the time delay estimation based on wavelets ( packet ) analysis
本文主要進行雷達波形設計研究以及研究小波理論在超寬帶雷達中的應用,集中體現在以下幾個方面:一類新的組合雷達波形設計及壓縮脈沖時間旁瓣抑制技術研究、超寬帶雷達多通道數據採集方法中前端射頻接收部分的設計及研製、基於小波(包)方法的時延估計方法。At first the merits and implementation of the digital pulse compression subsystem are introduced in this paper. then the characteristics of phase coded signals are discussed and the two classic binary phase codes ? ? barker code and m - sequence are dealt with in details in the following
文中首先綜述了數字脈沖壓縮的優點及其實現方法,接著討論了相位編碼信號的特點,並詳細分析了巴克碼和m序列這兩類典型的二相碼信號。In this dissertation the pulse compression performances of linear frequency modulation signals ( lfm ), nonlinear frequency modulation signals ( nlfm ) and design of their side - lobes suppression filters are analyzed, and design of the pulse compression program of 4 pieces of adsp21160 in the processing unit and the program of single piece of adsp21160 and fpga in the interface unit of the pulse compression system are introduced in detail
全文分析了線性調頻信號( lfm ) ,非線性調頻信號( nlfm )的頻域脈沖壓縮方法及其旁瓣抑制濾波器的設計和優化,詳細介紹了脈沖壓縮系統中基於4片adsp21160的處理單元和單片adsp21160和fpga組成的介面單元的軟體設計。A new method of fundamental soliton compression in fibers
光纖中基孤子脈沖壓縮的一種新方法Optical pulse compression using a nonlinear optical loop mirror constructed from step - decreasing - dispersion fiber
基於階梯色散漸減光纖環鏡的光脈沖壓縮方法Measurements of the electrical properties of transmitting tubes - methods of measuring the press of synchronizing pulse
發射管電性能測試方法同步脈沖壓縮的測試方法At the same time, they process a great deal of data with high rate. these characteristics make them suitable to realize in fpga. pulse compression technology has request of multi - channel and real - time processing when it is applied in software radar
脈沖壓縮技術在軟體雷達中應用時,對信號處理有多通道實時處理的要求,由於其演算法簡單,非常適合於在fpga中實現。Linear frequency modulated ( lfm ) signals as the most popular pulse compression signal are a typical kind of time - varying, nonstationary signals, so applying the wigner - ville distribution into lfm signals has more advantages than conventional methods
雷達脈沖壓縮技術中所使用的線性調頻信號是一類典型的時變非平穩信號,採用時頻分析的研究方法處理線性調頻信號有著傳統方法無法比擬的優點。Radar emits wide pulse to ensure the distance, and gets narrow pulse by using corresponding pulse compression method when receiving. this is pulse compression
脈沖壓縮是指雷達通過發射寬脈沖,保證足夠的最大作用距離,而接收時,採用相應的脈沖壓縮法獲得窄脈沖以提高距離解析度的過程。Secondly, this dissertation analyses the method of waveform designing and processing for three hybrid pulse compression signals. the combined signals are improved on the characteristic than the single modulation mode
其次,本文分析了三種組合脈沖壓縮信號的設計和處理方法,合成信號的性能較以前的單一信號有很大改善。With the development of modern digital technology and vlsi, the method of digital waveform synthesis of the pulse compression signals is now widely used in radar systems
現代數字技術和vlsi技術迅猛發展,波形合成已經由傳統的純模擬方法發展到現在的直接數字合成,數字方式獲得脈沖壓縮信號已成為現代雷達普遍採用的波形合成方法。The fixed - point dsp program is given which are based on the analysis in the feather of the video signal and the 16 - bit fixed - point dsp - - tms320c5402. at last, the result and quantity of calculation are analyzed to prove that the speed and precision of calculation are matched to the system requirement
在深入分析了線性調頻脈沖壓縮信號產生過程和特性的基礎上,結合16位定點dsp ? ? tms320c5402的硬體結構和指令系統的特點,編寫了定點dsp程序,並對程序的計算量和計算結果進行了分析,表明演算法的速度和精度都可以滿足系統的要求。The platform implements the signal processing dataflow of range - doppler algorithm such as range compression, clutter lock, azimuth preprocessing and azimuth processing. this paper derives that multiplying 1 / 2 factor can avoid fixed - point overflow
該平臺能完成r - d演算法中的距離向脈沖壓縮、雜波鎖定、方位向預處理及方位處理功能本文針對定點分裂基fft演算法,推導出加入1 2衰減因子可以避免定點運算時產生的溢出。On the other hand, the irls algorithm is employed to design mismatched filters for other signals, such as linear frequency modulated chirp. the methods of improving tolerance of low doppler shifts are given finally
同時我們還將迭代加權最小二乘演算法推廣應用於其它信號形式的脈沖壓縮濾波器設計,並提出了有關多普勒頻率性能的改善方法。It multiplies a gene with liner phase relating to the number of pulse by the frequency region reference function of range compression
其方法是在距離脈沖壓縮的頻域參考函數上乘一個與脈沖數有關的線性相位因子。The improved algorithm based on split radix fft meet the real time demand of range compression node and remove the effect of pulse compression result for the overflow
與傳統的基2 、基4演算法相比,該演算法滿足距離壓縮節點的實時性能要求,同時解決了由於溢出對脈沖壓縮結果的影響。A theoretical investigation by split - step fourier method is presented on the propagation of a femtosecond gauss pulse in photonic crystal fibers
摘要運用分步傅里葉方法數值模擬了飛秒高斯脈沖在光子晶體光纖中的傳輸,計算分析了初始啁啾對脈沖壓縮效應的影響。In this dissertation the pulse compression performances of linear frequency modulation signals ( lfm ) and the algorithm of mti / mtd are analyzed. programme and its optimization of them based on 2 pieces of adsp - ts203 are introduced in detail
全文主要分析了線性調頻信號( lfm )的頻域脈沖壓縮方法及mti / mtd的演算法;詳細介紹了基於兩片ts203的脈沖壓縮和mti / mtd的程序設計及其優化。The interference and its processing method of long sequence phase - modulation signal of multitargets in pulse compression are studied emphatically
重點研究了長序列調相信號多目標對脈沖壓縮的相互影響及其處理方法。分享友人