云鼎科技：北斗天地在北斗卫星通信和导航方面相关产品业务量较小

Group 1 - The core viewpoint of the article is that Beidou Tiandi Co., Ltd. is a subsidiary of the company, and it specializes in satellite communication and navigation products related to the Beidou system [2] - Beidou Tiandi's main products include a series of Beidou + wireless self-organizing network communication products, Beidou-3 short message terminals, and satellite navigation positioning modules, which enable self-organizing network communication and satellite communication and positioning functions [2] - The business volume of these products is relatively small and does not significantly impact the company's overall performance [2]