Satellite navigation has undergone significant advancements in both military and civilian domains. Navigation warfare has emerged as a critical issue in contemporary localized military conflicts and great power rivalries. The urgent challenge lies in the rapid detection and localization of interference sources， providing actionable battlefield situational awareness for military command， enabling more adaptive decision-making processes， and ensuring the safety and reliability of navigational information. This paper introduces the concept of navigation warfare and provides an overview of passive positioning technology. It also analyzes commonly employed parameter estimation methods for passive positioning， compares observable， mathematical models， and positioning performance metrics associated with passive positioning techniques. Furthermore， it examines the current status and future trends in satellite navigation interference detection and location technologies.