###### Abstract  
For wireless communication systems, receivers usually work under complex electromagnetic environments and are often susceptible to electromagnetic interference (EMI). With the wide application of pulse signals in various fields, the impact of pulse signals on the receivers of communication system has not been extensively studied. On the one hand, the existing receiver electromagnetic sensitivity (EMS) interference coupling effect is mainly analyzed from the perspective of energy only, without considering of different electromagnetic parameter characteristics of pulse signal, such as pulse width, repetition period, duty cycle and so on. On the other hand, there is a lack of quantitative characterization of typical performance indexes of receiver subject to pulsed interference environment, resulting in insufficient reliability and accuracy of receiver interference degree prediction and electromagnetic compatibility (EMC) evaluation. This paper focuses on the EMS interference coupling effect analysis and EMC evaluation method of receiver under pulsed interference environment. First, based on the analysis of the interference mechanism of the pulse signal on receivers, the formula for the bit error ratio (BER) is derived. Then a system model is proposed to verify the theoretical analysis results through numerical simulation. With the established relationship between the parameters of the pulsed interference and the BER performance of the receiver, a novel EMC evaluation method has been proposed. As a practical application example, the evaluation method is verified via a well-designed experiment on BeiDou Navigation Satellite System (BDS). The experiment shows that the observed phenomena are in good agreement with the conclusions of the proposed evaluation method, proving that the method is applicable to the EMC evaluation of receiver under pulsed signal interference environment. reciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercierciercercierciercierciercierciercerciercierciercerciercercierciercierciercercierciercercierciercerciercercierc  
an important part of the working electromagnetic environment of electronic systems. Depending on the different uses and operation modes of the system, there are many sources and types of pulse signals, such as the pantograph arc radiation generated during high-speed railroad operation and the external radiation from radar, etc. Taking the pulse signal in radar as an example, it has the characteristics of high-power density in energy domain, large spectrum occupation in frequency domain, wide distribution range in airspace [1; 2]. The pulse signal can usually be characterized by parameters such as pulse width, pulse power, carrier frequency, repetition period (related to duty cycle and pulse width) and so on [3]. When the carrier frequency of the pulse signal is in the same frequency band as the operating frequency of the receiver, it is easy to cause in-band interference to the receiver. In addition, it may cause out-of-band interference to the receiver considering the operating characteristics of the receiver's back-end circuit and the received pulse signal power. As a key component of electronic systems, whether the receiver could operate normally in the electromagnetic environment determines the performance of electronic systems. For example, through the information interaction between the navigation receiver and BDS, the user can realize the stable tracking of satellite navigation signals. The railway traffic management system completes the communication between the train and the dispatching center through Global System for Mobile Communications-Railway (GSM-R). However, when the receiver encounters EMI during operation, the main performance indicators of the receiver could be affected.