论述了发展LPI雷达的几个基本问题。首先分析了雷达截获性能与目标特性、雷达特性和侦察接收机的关系．对现有几种有代表性的雷达分析了截获距离，并讨论了LPI措施及其得益，提出了LPI措施的反侦察“效益门限”的概念，并分析了扩谱的LPI得益，最后阐明了LPI雷达是雷达体制的重大变革，提出了分二步走的发展战略。

This paper describes several fundamental problems of the development of LPI radar. The LPI performances related to the characteriztics of target, radar and Elint receiver are analyzed. Then the interception range of radar radiation by Elint receiver for several representative radars is calculated. The LPI measures and its gain are commented. The concept of "LPI Effect Threshold" is proposed. The gain of spread spectrum technique is analyzed. In the end, It is pointed out that LPI Radar is an important radar structural reform and the strategy of two development steps is suggested.

TN95