【摘要】 检测无线视频传输的信号强度,既可以检测信号质量,还能为信号传输选择最佳可用频率段。提出了一种基于DSP和MAX2165的DVB-T/H信号强度检测方法,给出了系统设计方案。该方案先扫描频段内的信号,将其下变频到基带,然后对基带信号进行功率测量,最后获得信号强度。测试结果的分析,验证了该方案的可行性和有效性。更多还原

【Abstract】 Detecting signal strength of wireless video transmission is useful for the monitoring and selection of the best available frequency.A lightweight detection system of DVB-T / H signal strength is proposed based on DSP and MAX2165.In the detection system,the wireless radio frequency signal is down converted to baseband signal.The strength of baseband signal is got by power measurement.Experiments and results show that the lightweight detection system is feasible and effective.更多还原