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本文描述了由罗克威尔公司研制试验的自动频率管理系统(AFMS),它可满足高频通信系统新的或进一步的要求.使系统对信道有更大的自适应能力以及更少的人工干予.大多数现代的高频系统通常采用数字数据调制加上模拟或数字话音调制技术,并在保密或非保密链路上传送信息.既定的趋势是发展全数字化网络.其中,数据交换、传真、同步的或实时的数字话音等工作方式均采用了数字信号处理(DSP)技术.使用DSP技术能比以前不用时有更稳固可靠的数据传输.本文描述的AFMS系统利用从正常通信链路中提取需要测量的信道的质量信息数据来扩展这种数字化趋势.目前是由先进的链路质量分析器(ALQA)获取测量数据.在ALQA测量中,对每一条被测试线路,通过MOF(最高工作频率)测定算法来简化得出一个对应的MOF值.这个算法允许由n个已测量线路向m个非测量线路提供预报MUF(最大可用频率)所需的MOF值.这里n远小于m.这种预报技术是以向人们熟知的MINIMUF3.5模型提供近乎实时的更新资料,即伪太阳黑子数(PSEUDO SSN)为基础的.测量和预报过程是连续自动进行的,并将更新预置的频率表。本文叙述了空间测量的全过程,这种测量为了验证测量精度、速率、测量时间、资料更新速率等参数以及如何把这些测量数据应用于广泛分布网络通信的实用性.本文最后讨论与ECCM(电子反干扰)系统有关的AFMS技术.讨论中着重强调了指令线路和控制系统的要求。
This article describes an automated frequency management system (AFMS) developed and tested by Rockwell Inc. to meet new or further requirements for high-frequency communication systems, to make the system more adaptable to channels and to less manual intervention Most modern high frequency systems typically employ digital data modulation plus analogue or digital voice modulation techniques and transmit information on a secure or unsecured link.The established trend is to develop fully digital networks in which data exchange, fax, Synchronous or real-time digital voice and other work are using digital signal processing (DSP) technology.Using DSP technology can be more stable and reliable data transmission than before.An AFMS system described in this article is extracted from the normal communication link This digital trend needs to be extended by measuring the quality of the channel’s channel quality data, which is currently measured by the Advanced Link Quality Analyzer (ALQA). In ALQA measurements, for each line under test, the MOF (Maximum Operating Frequency ) Algorithm to simplify the derivation of a corresponding MOF value. This algorithm allows the prediction of MUF from n measured lines to m non-measured lines Available frequency), where n is much less than m This forecasting technique is based on the familiar real-time update of the MINIMUF 3.5 model, known as PSEUDO SSN. And the forecast process is continuous automatic, and will update the preset frequency table. This paper describes the whole process of spatial measurement in order to verify parameters such as measurement accuracy, rate, measurement time, data update rate, and how to apply these measurements to a wide range of distributed network communications.In the end, Anti-jamming) system-related AFMS technology. The discussion highlighted the requirements of command lines and control systems.