调频广播电台智能搜索方法研究及实现  

Research on Intelligent Searching Method for FM Radio Station

作　　者：刘磊 Liu Lei(Harbin Monitoring Station, NRTA, Heilongjiang 150089, China)

机构地区：[1]国家广播电视总局哈尔滨监测台,黑龙江150089

出　　处：《广播与电视技术》2019年第2期96-98,共3页Radio & TV Broadcast Engineering

摘　　要：监测调频广播传输覆盖秩序,及时发现"黑广播",关键技术是调频电台的自动搜索和记录。传统频道扫描的方式效率低,频谱门限自动搜索的方式易产生误报和漏报,且两种方式均无自动记录功能,所以无法快速完成大范围的传输覆盖秩序监测。本文分析频谱门限搜索误报原因,提出智能搜索算法,并利用宽频多通道接收机实现了智能搜索和自动录音,大大提高了搜索准确率和监测效率。FM radio intelligent searching and recording are the key technologies for broadcasting monitoring and black broadcast discovery.Traditionally,we use channel scanning and spectrum constant-threshold searching methods.Because of the low efficiency of traditional scanning and missing or false alarms in spectrum constant-threshold searching,it is hard to complete wide area monitoring,especially when there is no record function in both methods.This paper analyzes the reasons of traditional methods’short-comings,and proposes improved methods for intelligent searching,and realizes auto search-record with a wideband multi-channel receiver.The monitoring accuracy and efficiency are improved significantly.

关 键 词：调频广播 智能搜索 黑广播 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]