• Direct digital synthesis (DDS) is an all digital frequency synthesis technique. Because of its special theory and construction, it has many kinds of modulation capability.

    直接数字式频率合成(DDS)技术一种数字频率合成技术特殊原理结构使具有多种调制能力

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  • OFDM is a modulation method which was often used in the channels. It has better capability against the fading and can realized parallel transmission.

    正交频分复用调制(OFDM)一种信道利用率很高调制方式,具有良好衰落能力实现并行传送。

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  • As a result, the computer simulations show that the LPI capability of the new DSSS modulation become more effective within the same bandwidth and Spread Spectrum gain.

    计算机仿真结果表明,在调制带宽扩频增益不变前提下,提高DSSS调制信号的低概率截获性能

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  • Modulation format of signal has become a key technique to enhance the transmission capability of system in the long-distance system.

    超长距离传输时,信号调制格式提高系统传输性能一项关键技术

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  • The pseudorandom code instead of single impulse is used for modulation to improve the capability of anti-jamming and precision of measuring range.

    使用完全正交随机代替脉冲信号超声信号进行调制提高发送信号抗干扰能力系统的测距精度

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  • This paper discusses the results of system simulation of linear frequency modulation pulse-compression radar and draws some conclusion on its capability of counter-jamming.

    通过噪声干扰、噪声调幅干扰干扰对脉冲压缩雷达干扰仿真得出了一些有意义结论

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  • This paper discusses the results of system simulation of linear frequency modulation pulse-compression radar and draws some conclusion on its capability of counter-jamming.

    通过噪声干扰、噪声调幅干扰干扰对脉冲压缩雷达干扰仿真得出了一些有意义结论

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