用机载模拟电台综合传送飞参数据与话音的研究
|
摘要
本文研究如何利用现有的机载模拟电台实现话音和飞参数据的综合传送，其原理是：在发送端，先将模拟话音信号数字化并进行压缩编码，再将压缩后的话音数据信号与待传的飞参数据信号复用。然后，对复用信号进行加密编码、卷积编码和比特交织处理。最后，对比特数据流作数字π／4-DQPSK调制，通过D／A转换输出，信号送给机载模拟电台。在接收端，先将机载模拟电台输出的信号滤波及放大限幅，然后进行A／D转换，再实现信号的数字π／4-DQPSK解调、解交织、维特比译码和解密译码。最后，将信号解复用后，恢复成语音信号及数据信号。该系统以软件无线电和全数字接收机为理论基础，以高速DSP芯片为核心构成系统的硬件平台，用软件实现基带数字信号处理和音频载波调制与解调，达到用机载模拟电台综合传送飞参数据和话音信号的目的。深入研究表明，该系统具有可行性。本文对上述系统的工作原理作了详细分析，并着重介绍了系统工作软件设计、系统调试与仿真等本人参与的研究工作。
How to implement the transmission of data of the flight parameters and audio signal simultaneously through airborne analog radio transceiver is researched in this paper. The principle is: at the transmission part, firstly the digitized and compressed speech signal and the data are multiplexed. Secondly, the data stream is encrypted, convolution-encoded and interleaved. Thirdly it is differentially encoded and digitally π/4-DQPSK modulated. At last it is through the D/A converter and transmitted to the airborne analog radio. At the receive part, the received signal firstly is filtered, amplified, amplitude-limited and goes through a A/D converter, then the data stream is π/4-DQPSK demodulated, differentially decoded, deinterleaved and Viterbi decoded. Finally the signal is decrypted, demultiplexed and restored to the original speech signal and original data. This system is based on the Software Radio conception and whole-digital receiver principle and use DSP chips as its operating platform. It implements the baseband signal processing and modulation/demodulation through software. The research shows the above scheme has the feasibility. This paper analyzes the operating principles of this system in details and focuses on my work which includes the system's software designing, debugging and simulating.
How to implement the transmission of data of the flight parameters and audio signal simultaneously through airborne analog radio transceiver is researched in this paper. The principle is: at the transmission part, firstly the digitized and compressed speech signal and the data are multiplexed. Secondly, the data stream is encrypted, convolution-encoded and interleaved. Thirdly it is differentially encoded and digitally π/4-DQPSK modulated. At last it is through the D/A converter and transmitted to the airborne analog radio. At the receive part, the received signal firstly is filtered, amplified, amplitude-limited and goes through a A/D converter, then the data stream is π/4-DQPSK demodulated, differentially decoded, deinterleaved and Viterbi decoded. Finally the signal is decrypted, demultiplexed and restored to the original speech signal and original data. This system is based on the Software Radio conception and whole-digital receiver principle and use DSP chips as its operating platform. It implements the baseband signal processing and modulation/demodulation through software. The research shows the above scheme has the feasibility. This paper analyzes the operating principles of this system in details and focuses on my work which includes the system's software designing, debugging and simulating.
引文
1 郭梯云，刘增基，王新梅，詹道庸，杨洽等．数据传输．人民邮电出版社．1998
2 杨万全，熊淑华，卫武迪，韩运浦．现代通信技术．四川大学出版社．2000
3 曹志刚，钱压生．现代通信原理．清华大学出版社．1993
4 Theodore S．Rappaport．无线通信原理与应用．电子工业出版社．1999
5 William Stallings．数据与计算机通信．电子工业出版社．2000
6 郭梯云，邬国扬，张厥盛．移动通信．西安电子科技大学出版社．1998
7 张炜，潘长勇，郭兴波，杨知行．卫星信号全数字解调器的研制．电讯技术． 2001
8 朱近康．扩展频谱通信及其应用．中国科学技术大学出版社．1993
9 肖国镇，梁传甲，王育民．伪随机序列及其应用．国防工业出版社．1985
10 陈叙，杨万全．一种产生周期任意长伪随机序列的新方法．通信保密．2000
11 杨万全，朱立东，汤黎．基于m序列的周期任意长伪随机序列产生方法．现代通信技术1999
12 杨小牛，楼才义，徐建良．软件无线电原理与应用．电子工业出版社．2001
13 何林娜，尹伟．软件无线电技术及其在蜂窝移动通信系统中的应用研究．电讯技术．2001
14 赵尔沅，周利清，张延平．数字信号处理实用教程．人民邮电出版社．1999
15 黄文梅，熊桂林．信号分析与处理——MATLAB语言及应用．国防科技大学出版社．2000
16 彭启棕．TMS320C54X实用教程．电子科技大学出版社．2000
17 张雄伟，曹铁勇．DSP芯片的原理与开发应用．电子工业出版社．2000
18 数字信号处理器TMS320C54X结构、原理及应用．四川大学现代数字技术培训中心
19 FA-20E采集记录器技术说明书．(XXXX)电子仪器厂
20 Komo J J , Lam M S. Primitive Polynomials and M-Sequences Over GF(q~m).IEEE Trans. Inform. Theory, Vol.39, No.2, March 1993
21 TEXAS INSTRUMENTS. TMS320C54xDSP Reference Set, Volume 1: CPU and Peripherals. 1999
22 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 2: Mnemonic Instruction Set. 1999
23 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 3: Algebraic Instruction Set. 1999
24 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 4: Applications Guide
25 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 5: Enhanced Peripherals
2 杨万全，熊淑华，卫武迪，韩运浦．现代通信技术．四川大学出版社．2000
3 曹志刚，钱压生．现代通信原理．清华大学出版社．1993
4 Theodore S．Rappaport．无线通信原理与应用．电子工业出版社．1999
5 William Stallings．数据与计算机通信．电子工业出版社．2000
6 郭梯云，邬国扬，张厥盛．移动通信．西安电子科技大学出版社．1998
7 张炜，潘长勇，郭兴波，杨知行．卫星信号全数字解调器的研制．电讯技术． 2001
8 朱近康．扩展频谱通信及其应用．中国科学技术大学出版社．1993
9 肖国镇，梁传甲，王育民．伪随机序列及其应用．国防工业出版社．1985
10 陈叙，杨万全．一种产生周期任意长伪随机序列的新方法．通信保密．2000
11 杨万全，朱立东，汤黎．基于m序列的周期任意长伪随机序列产生方法．现代通信技术1999
12 杨小牛，楼才义，徐建良．软件无线电原理与应用．电子工业出版社．2001
13 何林娜，尹伟．软件无线电技术及其在蜂窝移动通信系统中的应用研究．电讯技术．2001
14 赵尔沅，周利清，张延平．数字信号处理实用教程．人民邮电出版社．1999
15 黄文梅，熊桂林．信号分析与处理——MATLAB语言及应用．国防科技大学出版社．2000
16 彭启棕．TMS320C54X实用教程．电子科技大学出版社．2000
17 张雄伟，曹铁勇．DSP芯片的原理与开发应用．电子工业出版社．2000
18 数字信号处理器TMS320C54X结构、原理及应用．四川大学现代数字技术培训中心
19 FA-20E采集记录器技术说明书．(XXXX)电子仪器厂
20 Komo J J , Lam M S. Primitive Polynomials and M-Sequences Over GF(q~m).IEEE Trans. Inform. Theory, Vol.39, No.2, March 1993
21 TEXAS INSTRUMENTS. TMS320C54xDSP Reference Set, Volume 1: CPU and Peripherals. 1999
22 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 2: Mnemonic Instruction Set. 1999
23 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 3: Algebraic Instruction Set. 1999
24 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 4: Applications Guide
25 TEXAS INSTRUMENTS. TMS320C54x DSP Reference Set, Volume 5: Enhanced Peripherals