signal reconnaissance 中文意思是什麼

signal reconnaissance 解釋
通信偵察
  • signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
  • reconnaissance : n. 1. 偵察，搜索。2. 踏勘；勘察，探查；【植物；植物學】概測。3. 偵察隊；偵察車。
  1. In order to meet the needs of dsss signal reconnaissance, a method of dispreading without the code is brought forward by this paper ， in which the local code is gained from the dsss signal. so we can intercept dsss signal with low snr even if the spreading code is unknown. liu jie ( communication and information system ) directed by prof. gao huisheng

    為適應電子戰中對直擴信號偵察的需要，本文提出一種了無碼解擴的方案，採用從直擴信號中獲得本地參考信號的方法，可以在沒有擴頻碼的情況下，截獲低信噪比直擴信號的通信信息。
  2. To improve anti - jamming technique by spread spectrum close to monochromatic frequency, so that enhance the ability of anti - active - jamming and anti - passive - jamming, anti reconnaissance, anti - radiation missile, anti - stealth, by means of multi frequency spread spectrum and hopping spectrum instead of mono - frequency spread spectrum, realizing strong processing system for anti - interference signal, providing the method of generating of chirp signal and corresponding matched filter system

    摘要為改進線性調頻雷達系統所採用的在單色頻率點附近擴譜抗干擾技術，加強制導雷達站具備抗有源、無源干擾，反偵察，抗硬殺傷的反幅射導彈和反隱身的能力，通過將單頻點擴譜改為多頻點擴譜跳譜，實現了高抗干擾信號處理系統，給出方案中在中頻段實現的線性調頻信號產生方法以及對應的匹配濾波處理系統。
  3. The general electronic warfare reconnaissance receiver, at the same time the multi - signal processing ability is weak, it only can do single signal processing per time. to process more signals, common receivers use pipeline and time - sharing method which is totally unsuitable for the extremely complicated electromagnetic environment in the modern war

    通常的電子戰偵察接收機，同時多信號處理能力比較弱，同一時刻只能處理一個信號，而對多信號的處理只能採用流水作業的辦法進行時分處理，這已不能適應日益復雜的電磁環境下的信息化戰場需求。
  4. The main work of the dissertation is as follows. ( 1 ) signal characteristics under modern electronic reconnaissance environment is analyzed. it ’ s pointed out that wideband digital receiver must satisfy wide monitoring band, pipeline operation and almost real - time response

    論文主要工作如下: （ 1 ）分析了現代電子偵察環境下的信號特徵，指出寬帶數字接收機必須滿足寬監視帶寬、流水作業以及近實時的響應時間。
  5. High resolution direction - finding method using array signal processing technique plays a pivotal role in the new electronic reconnaissance satellite system

    採用陣列信號處理進行高分辨測向是新體制電子偵察衛星的關鍵環節。
  6. High resolution direction - finding using array signal processing plays an important role in the new electronic reconnaissance satellite system. several algorithms, such as music esprit, wsf, foc - music, are researched in this paper. the analysis of these algorithms principle and the comparison of their performance from the point of view of engineering are given too

    採用陣列信號處理進行高解析度測向是新體制電子偵察衛星最關鍵的一個環節，本文研究了music 、 esprit 、 wsf 、 foc ? music等演算法的原理並從工程實用的角度分析比較了它們的性能。
  7. The digital signal processing, with its superior performances over the analog processing, has drawn wide attentions in the engineering area provide an idea development mode for electronic reconnaissance system, which is different form the communication system in its wide - band processing

    數字處理比模擬處理有更優越的性能，正受到工程界越來越多的關注。通信領域軟體無線電的成功應用為電子偵察系統的發展提供了一種理想的模式。電子偵察系統與通信系統最大的區別在於寬帶處理。
  8. The paper gives a kind of fft channelizing scheme used in the item, by analyzing different methods of reconnaissance and jamming for hopping frequency communication. and the paper gives a kind of design of frequency synthesis system on the basis of fpga and dds technology, and fpga is used to control the dds chip to produce different jamming signal

    文章通過對目前各國正在研究使用的幾種跳頻通信偵察方案以及通信對抗中所用的各類干擾方式的介紹與分析比較，提出了一種在本實驗系統中應用的fft -通道化偵察測頻方案，並在此基礎上設計了一種基於fpga和dds技術的頻率合成模塊，採用fpga控制dds晶元產生各種干擾信號。
  9. It is urgent to research and develop new reconnaissance receiver with the properties of wide band, high sensibility, wide dynamic range and accuracy signal parameter estimation

    為了偵察超寬帶雷達信號，迫切需要研製帶寬大、靈敏度高、動態范圍大、參數估計精度高的雷達偵察接收機。
  10. Array processing plays a very important role in many fields such as mobile comunication, electronic reconnaissance, parameter estimation, signal discrimination and so on. subspace - based method is one of the important methods of array processing and has producted plenty of high performance algorithms through years of development. the typical ones are music ( multiple signal classification ), esprit ( estimation of signal parameters via rotational invariance technique )

    信號子空間方法是陣列測向方法中重要的一種，經過多年的發展，已經產生了大量性能優異的測向演算法，典型的有music （ multiplesignalclassification ） 、 esprit （ estimationofsignalparametersviarotationalinvariancetechnique ）等。
  11. This dissertation investigates primarily the channelized receiver ’ s application in electronic reconnaissance, and puts forward a project of the wideband signal reconstruction system including 4 - band efficient channelized receivers and a project which is 8 - band efficient digital channelized ifm receiver, then testifies them with simulation

    文中重點討論了通道化數字接收機在電子偵察中的應用，提出了基於數字通道化高效結構的4通道重建系統方案和8通道ifm接收機方案，並通過系統模擬論證了方案的正確性。
  12. The main work of this dissertation can be summarized as follows. 1 、 the low probability of intercept ( lpi ) of uwb radar is analyzed based on the radar equation and reconnaissance equation. the necessity of making reconnaissance of uwb signal in the circumstance of low or negative snr is proved

    本文主要工作如下: 1 、從超寬帶雷達方程和偵察方程出發，分析了超寬帶雷達信號的低截獲特性，證明了超寬帶雷達信號的偵察和參數估計在低信噪比條件下的必然性。
  13. The main achievements of the dissertation are included : ( 1 ) the limitations of the traditional channelized reconnaissance receivers indicate that it cannot be used to receive the ultra - wide radar signal. it is pointed that the ultra - wide receiver must satisfy ultra wide monitoring band, high sensibility, wide dynamic range and almost real - time response

    論文主要工作如下: （ 1 ）分析了多種傳統通道化接收機的結構性能，及其在超寬帶信號接收中的局限性，指出超寬帶通道化接收機必須滿足實時性、高靈敏度和大動態范圍等性能。
  14. A sort of digital reconnaissance receiver based on multi - signal direct intermediate frequency sampling

    的直接中頻采樣數字接收機設計
  15. It has raised more attentions in engineer fields, specially in signal analysis, images handles, pattern recognition, phonetic recognition, quantum physics, earthquake reconnaissance, fluid mechanics, electromagnetic field, ct imagery, diagnosis and monitoring of machinery defect, fractal, numerical evaluation et al. it is considered as important breakthrough in methods and tools

    它在科學技術界引起了越來越多的關注和重視，在工程應用領域，特別是在信號處理、圖像處理、模式識別、語音識別、量子物理、地震勘測、流體力學、電磁場、 ct成像、機械故障診斷與監控、分形、數值計算等領域，它被認為是近年來在工具及方法上的重大突破。
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