Multipath and Doppler effects and Models,關于多徑多普勒學習的很好的資料
標簽: Multipath and Doppler effects
上傳時間: 2014-01-16
上傳用戶:日光微瀾
The function applies the Madsen method for Doppler Centroid estimation. The input are: 1) the raw data, the parameter of the distance between samples in azimuth to be correlated and the PRF (Pulse repetition frequency)
標簽: estimation The the Centroid
上傳時間: 2017-08-12
上傳用戶:pinksun9
rang Doppler imaging and motion compensation中的源代碼
標簽: compensation Doppler imaging motion
上傳時間: 2013-12-24
上傳用戶:cainaifa
本文針對應用于軍用直升機上的Doppler/SINS組合導航系統對導航計算機高精度、高性能的要求,設計出一種基于DSP(TMS320C6713)和FPGA(Spartan-3E XC3S500E) 協同合作的機載導航計算機系統。在分析Doppler/SINS組合導航系統模型的特點和系統對導航計算機的需求后,提出了基于DSP和FPGA的機載導航計算機整體設計方案,該方案采用DSP負責導航解算,利用FPGA強大的內部資源擴展系統的通信接口,完成外圍通信模塊控制信號的整合。在導航計算機整體設計方案,包括硬件設計方案和軟件設計方案確立的基礎上,首先對 DSP和FPGA芯片進行選型,其次對實現各個功能模塊的關鍵技術進行研究和開發,包括基于FPGA的數據通信模塊、基于DSP的處理器模塊以及數據存儲模塊,開發過程中做了大量的仿真和驗證,最后對系統進行綜合測試和聯調,并進行了地面跑車實驗。實驗結果證明:系統能夠實時采集IMU角速率和加速度、Doppler雷達的速度等信息,能夠對IMU、Doppler、GPS、航姿系統、高度表等信息進行導航解算,生成當前位置、姿態等導航數據,并能夠完成與機載電子設備間的數據通信與控制。多次的聯調和跑車實驗結果證明,機載導航計算機達到了預期設計的目的,可以有效提高導航系統的運算精度,實現了高性能、小體積、低成本的要求,系統具有較高的應用價值。關鍵詞:Doppler/SINS組合導航,導航計算機,DSP,FPGA
上傳時間: 2013-07-25
上傳用戶:cc1915
針對運行中火車測速運用多普勒效應采用DSP 設計雷達測速系統并闡述了其基本設計思想與工作原理給出系統硬件軟件設計結構和原理圖改善了原有光電測速精度提高了系統工作穩定性和可靠性經實驗證明DSP 采集板工作穩定測速效果好關鍵詞DSP; 雷達測速; 多普勒效應 On Board DSP-Based Radar Speed Measurement System TANG Wei, SUN Zhi-fang, CHEN Quan (Dept.of computer Science,Yangtze University,Jingzhou 434023,China)Abstract: This paper presents a DSP-based train speed measurement by using Doppler radar. The structure of the system is introduced.The hardware and software are also discussed.Key words: DSP; rader speed measurement; Doppler principle
上傳時間: 2013-10-27
上傳用戶:003030
用于模擬時變非平穩的ARMA過程,根據Doppler頻移和時變參數計算ARMA過程的系數,可以用來模擬非平穩的多徑衰落信道
上傳時間: 2015-04-17
上傳用戶:wfeel
Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.
標簽: synchronization Carrier-phase multiplicativ approached
上傳時間: 2013-11-28
上傳用戶:windwolf2000
這個檔案裡面的matlab的m函數,產生有效的都普勒fd隨機相關的瑞利衰減包絡,可以輸入你想要的Doppler ferquecy和sampling ferquecy
標簽: matlab
上傳時間: 2013-12-21
上傳用戶:cc1
利用matlab編程語言,對合成孔徑雷達的range-Doppler算法進行了仿真。
上傳時間: 2016-11-09
上傳用戶:aa54
有多徑信道、多普勒頻移,瑞利、RICE(萊斯)信道等仿真,QPSK調制和解調等,交織編碼。程序經過本人測試,絕對可用,并附上本人測試說明和仿真圖像結果-I collected information on 2, how-path channel, Doppler frequency shift, Rayleigh, RICE (Rice) channel, such as simulation, QPSK modulation and demodulation, etc., Interleaved Coded. After I tested the procedure is absolutely available, along with my test images and simulation results indicate.
上傳時間: 2015-06-16
上傳用戶:whtiger