A new ranging method based on quadric difference frequency is presented.
提出了一种基于二次差频测距的新方法。
A formula of atmospheric refraction error of range measured by difference frequency delay method is presented.
给出了用差频延时法测距的距离折射误差计算公式。
The finite-difference frequency-domain method with multifrontal algorithm is presented for two-dimensional cylinder scattering problems.
引入多波前算法，提出了结合频域有限差分法分析二维柱体的电磁散射问题。
The realization mode of solving ambiguity for multiple frequency ranging usually has two kinds:quadric difference frequency and uneven dual frequency.
多频测距解模糊的实现方式通常有两种：二次差频和参差双频。
The compact 4-component 2-D finite-difference frequency-domain algorithm (2-D CFDFD) is one of the effective methods to calculate the propagation properties of ideal guided wave structures.
四分量紧凑格式二维频域有限差分（2-DCFDFD）算法，是求解理想导波结构传输特性的有效方法之一。
To overcome the disadvantages of light intensity difference frequency stabilization, the dithering frequency stabilization for four frequency differential laser gyro is studied in this paper.
为避免传统光强差稳频方式的缺陷，提出了四频差动激光陀螺小抖动稳频方法。
It mainly consists of harmonic generation, sum-frequency generation, difference-frequency generation, optical parametric oscillation and etc.
它主要由二次谐波产生、和频产生、差频产生、光参量振荡等构成。
It mainly consists of harmonic generation, sum-frequency generation, difference-frequency generation, optical parametric oscillation and etc.
它主要由二次谐波产生、和频产生、差频产生、光参量振荡等构成。
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