弹道模型由炮弹无控自由飞段、惯性制导滑翔段和末制导段按比例导引制导率建立。
The trajectory model consists of the uncontrolled free flight segment, the inertial guided glided segment and the final guidance segment, which accords with the proportional guided law.
基于抛物线比例导引原理，详细分析了弹道修正所需求的脉冲数。
Based on the principle on parabolic and proportional navigation guidance (PAPNG), the required pulse number for trajectory correction was analyzed in detail.
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