摘要
阐述了无线气象传真软件接收机的应用前景,分析了气象传真软件接收机的整体结构及解调模块在其中的重要作用;根据世界气象组织对无线气象传真传输的有关规范,采用数字正交解调的方法对气象传真信号进行解调,并通过Matlab仿真验证了解调算法的准确性和可行性;之后使用VC++对算法进行二次编程,并将其整合至无线气象传真接收软件;最终软件测试表明,采用正交解调方法的软件接收机系统稳定,解调迅速准确,可扩展性强,达到了无线气象传真机预期的研制指标。
Application prospect of wireless weather fax software receiver is elaborated, made a careful analysis of its overall structure and the important role of demodulation module in it.According to the World Meteorological Organization on wireless weather fax specifications, the receiver uses digital quadrature demodulation method to process the signal and the accuracy and feasibility of the demodulation algorithm is verified in simulation environment. After that the algorithm is programmed by using VC＋＋, then integrated into the software. The software tests show that, the program using the method of quadrature demodulation run stabile, quickly and accurately, it reach the expected development targets.
出处
《电子设计工程》
2011年第17期41-43,46,共4页
Electronic Design Engineering
