The radio detection technique of cosmic ray air showers has gained renewed interest in the last two decades. While the radio experiments are very cost-effective to deploy, the Monte-Carlo simulations required to analyse the data are computationally expensive. Here we present a proof of concept for a novel way to synthesise the radio emission from extensive air showers in simulations. It is a hybrid approach which uses a single microscopic Monte-Carlo simulation, called the origin shower, to generate the radio emission from a target shower with a different longitudinal evolution, primary particle type and energy. The method employs semi-analytical relations which only depend on the shower parameters to transform the radio signals in the simulated antennas. We apply this method to vertical air showers with energies ranging from $10^{17}\text{eV}$ to $10^{19}\text{eV}$ and compare the results with CoREAS simulations in two frequency bands, namely the broad [20, 500] $\text{MHz}$ band and a more narrow one at [30, 80] $\text{MHz}$. We gauge the synthesis quality using the maximal amplitude and energy fluence contained in the signal. We observe that the quality depends primarily on the difference in $X_{\text{max}}$ between the origin and target shower. After applying a linear bias correction, we find that for a shift in $X_{\text{max}}$ of less than 150 $\text{g}/{\text{cm}}^2$, template synthesis has a bias of less than 2% and a scatter up to 6%, both in amplitude, on the broad frequency range. On the restricted [30, 80] $\text{MHz}$ range the bias is similar, but the spread on amplitude drops down to 3%. These fluctuations are on the same level as the intrinsic scatter we observe in Monte-Carlo ensembles. We therefore surmise the observed scatter in amplitude to originate from intrinsic shower fluctuations we do not explicitly account for in template synthesis.

宇宙射线空气簇射的无线电探测技术在过去二十年中重新引起了人们的兴趣。虽然无线电实验的部署成本效益非常高，但分析数据所需的蒙特卡罗模拟的计算成本却很高。在这里，我们提出了一种新方法的概念证明，该方法可以在模拟中合成大量空气簇射的无线电发射。它是一种混合方法，使用单一的微观蒙特卡罗模拟（称为起源簇射）来生成具有不同纵向演化、初级粒子类型和能量的目标簇射的无线电发射。该方法采用仅依赖于喷淋参数的半解析关系来转换模拟天线中的无线电信号。我们将此方法应用于垂直风淋室，其能量范围为$10^{\mathrm{17\; 号}}\text{电子伏特}$到$10^{19}\text{电子伏特}$并将结果与​​ CoREAS 模拟在两个频段（即宽频带 [20, 500]）中进行比较$\text{兆赫兹}$频带和更窄的频带 [30, 80]$\text{兆赫兹}$。我们使用信号中包含的最大幅度和能量注量来衡量合成质量。我们观察到质量主要取决于$X_{\text{最大限度}}$源点和目标点阵之间。应用线性偏差校正后，我们发现对于$X_{\text{最大限度}}$少于 150$\text{G}/{\text{厘米}}^2$，模板合成在宽频率范围内的幅度偏差小于 2%，分散度高达 6%。关于受限 [30, 80]$\text{兆赫兹}$偏差范围相似，但幅度差异下降至 3%。这些波动与我们在蒙特卡洛系综中观察到的内在散射处于同一水平。因此，我们推测观察到的幅度散射源于我们在模板合成中没有明确考虑的内在流星波动。