發(fā)布時(shí)間：2018-10-19 14:01

【摘要】：隨著無線通信技術(shù)的發(fā)展,其應(yīng)用也越來越廣泛,除民用外也逐漸涉及國(guó)防軍事等領(lǐng)域,所以天線系統(tǒng)對(duì)功率有了更高的要求。短波通信的過程中,經(jīng)常需要采用一定的反干擾手段來保證通信質(zhì)量,最常用的是空間功率合成技術(shù),高精度的相位差則是其中的重要指標(biāo)。本文針對(duì)天線陣信號(hào),對(duì)移相信號(hào)進(jìn)行高精度檢測(cè)并進(jìn)行信號(hào)質(zhì)量分析,主要完成工作有:1.針對(duì)采用主流相位檢測(cè)方法的缺陷,對(duì)網(wǎng)絡(luò)化天線陣列系統(tǒng)中移相特性及相位檢測(cè)技術(shù)進(jìn)行深入的研究分析與驗(yàn)證,采用荷蘭TiePie HS5-530數(shù)據(jù)采集計(jì)算與AD8302硬件相位差檢測(cè)電路相結(jié)合的方式實(shí)現(xiàn)系統(tǒng)功能。相位差硬件檢測(cè)電路將相位差信息轉(zhuǎn)換為電平信息,然后通過串口通信將結(jié)果傳送到上位機(jī),最后上位機(jī)將采樣數(shù)據(jù)處理結(jié)果與硬件檢測(cè)結(jié)果統(tǒng)一進(jìn)行曲線擬合處理得出所需相位差結(jié)果。2.實(shí)現(xiàn)硬件平臺(tái)搭建,主要工作包括工控機(jī)的定制與內(nèi)部各功能模塊的連接布局、數(shù)據(jù)采樣模塊的特點(diǎn)及開發(fā)需求、硬件相位差檢測(cè)電路,確定硬件系統(tǒng)的整體框架,最終完成對(duì)硬件系統(tǒng)的整體設(shè)計(jì)。3.在數(shù)據(jù)處理的過程中系統(tǒng)主要完成對(duì)天線射頻信號(hào)的采樣與分析處理,包括FFT、波形還原、頻譜分析、相位差檢測(cè)、結(jié)果顯示等功能;實(shí)現(xiàn)移相特性采樣分析的自動(dòng)化,同時(shí)得到多路信號(hào)間相位差的高精度結(jié)果(±1°)。另外在程序的結(jié)果顯示界面,本文實(shí)現(xiàn)了信號(hào)波形還原和頻譜顯示功能。同時(shí)對(duì)信號(hào)質(zhì)量分析結(jié)果顯示在相應(yīng)區(qū)域,包括信號(hào)頻率、幅度、駐波比和信號(hào)間的相位差等;另外還有信息提示區(qū)實(shí)時(shí)反映系統(tǒng)的運(yùn)行狀態(tài)。在實(shí)現(xiàn)上述功能的前提下,擴(kuò)展了遠(yuǎn)程控制功能;用戶可以在遠(yuǎn)端通過IE登錄控制系統(tǒng)的功能實(shí)現(xiàn),并將結(jié)果數(shù)據(jù)通過TCP/IP通信協(xié)議接收并存儲(chǔ)。4.在整個(gè)系統(tǒng)設(shè)計(jì)完成后,根據(jù)項(xiàng)目指標(biāo)要求,通過一系列例行試驗(yàn)對(duì)系統(tǒng)整體進(jìn)行測(cè)試,將各組試驗(yàn)數(shù)據(jù)結(jié)果進(jìn)行精度分析,結(jié)果表明在初步測(cè)試的過程中本系統(tǒng)在各種模擬惡劣環(huán)境中都能夠滿足指標(biāo)要求。最后對(duì)本系統(tǒng)的遠(yuǎn)程通信功能進(jìn)行驗(yàn)證測(cè)試,在IE端能夠通過網(wǎng)絡(luò)化天線控制平臺(tái)遠(yuǎn)程操控程序的執(zhí)行,可知本系統(tǒng)的網(wǎng)絡(luò)化功能也能夠滿足要求。但是,本文所設(shè)計(jì)的系統(tǒng)也存在不足之處。首先數(shù)據(jù)庫(kù)系統(tǒng)設(shè)計(jì)不夠完善,對(duì)數(shù)據(jù)的存儲(chǔ)管理功能有待提高;另外程序執(zhí)行界面視覺效果也需要進(jìn)一步美化。
[Abstract]:With the development of wireless communication technology, its application is more and more extensive. Besides civil affairs, it is also gradually involved in the field of national defense and military affairs, so the antenna system has higher requirements for power. In the process of shortwave communication, some anti-interference means are often used to ensure the communication quality. The most commonly used technology is the space power synthesis technology, and the high precision phase difference is one of the important indexes. In this paper, the phase shift signal is detected with high precision and the signal quality is analyzed. The main work is as follows: 1. Aiming at the defects of the mainstream phase detection method, the phase shift characteristics and phase detection techniques in networked antenna array systems are studied and verified. The system functions are realized by combining Dutch TiePie HS5-530 data acquisition and AD8302 hardware phase difference detection circuit. The phase difference information is converted into the level information by the hardware detecting circuit of phase difference, and the result is transmitted to the upper computer through serial communication. Finally, the data processing result of sampling and the result of hardware testing are unified by the upper computer to get the desired phase difference result by curve fitting. 2. The main work includes the customization of the industrial computer and the connection layout of the internal functional modules, the characteristics and development requirements of the data sampling module, the hardware phase difference detection circuit, and the overall frame of the hardware system. The final completion of the hardware system of the overall design. 3. In the process of data processing, the system mainly completes the sampling and processing of antenna RF signals, including the functions of FFT, waveform reduction, spectrum analysis, phase difference detection, result display, etc. At the same time, the high accuracy results of phase difference between multichannel signals are obtained (鹵1 擄). In addition, in the result display interface of the program, this paper realizes the function of signal waveform restoration and spectrum display. At the same time, the results of signal quality analysis are shown in the corresponding regions, including signal frequency, amplitude, standing wave ratio and phase difference between signals, and there are also information warning areas to reflect the running state of the system in real time. On the premise of realizing the above functions, the remote control function is extended, the user can realize the function of the remote access control system through IE, and the result data is received and stored through the TCP/IP communication protocol. 4. After the design of the whole system is finished, according to the requirements of the project index, the whole system is tested through a series of routine tests, and the accuracy of the results of each group of test data is analyzed. The results show that the system can meet the requirements in various simulation environments. Finally, the remote communication function of the system is verified and tested. The remote control program of the platform can be controlled by the network antenna in the IE terminal, and the network function of the system can also meet the requirements. However, the system designed in this paper also has shortcomings. First, the design of database system is not perfect, and the function of data storage and management needs to be improved. In addition, the visual effect of program execution interface also needs to be further beautified.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN828

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