Spectrum map is the foundation of spectrum resource management, security governance and spectrum warfare. Aiming at the problem that the traditional spectrum mapping is limited to two-dimensional space, a three-dimensional spectrum data acquisition and mapping system architecture for the integration of space, sky and earth is presented, and a spectrum map reconstruction scheme driven by propagation model is proposed, which can achieve high-precision three-dimensional spectrum map rendering under the condition of sparse sampling. The spectrum map reconstructed by this method in the case of single radiation source and multiple radiation sources is in good agreement with the theoretical results based on ray tracing method. In addition, the measured results of typical scenes further verify the feasibility of this method.

Communication is an important part of organizational management activities and management behavior. In human resource management, effective communication plays an extremely important role. Human resources as one of the most critical resources of enterprises, the effectiveness of management is directly related to the survival and development of enterprises. Communication is the process of communication and transmission of information, effective communication is an important magic weapon for each enterprise to gain competitive advantage and success. This paper summarizes the important position and function of communication in enterprise human resource management, and puts forward the basic viewpoints and suggestions on how to establish the management communication mode from the perspective of human resource management.