Two defenders use the proposed guidance law and the augmented proportional navigation
(APN, N = 5, K = 2) with angle restraints in , respectively.
Chern, "Solutions of true proportional navigation
for maneuvering and nonmaneuvering targets," Journal of Guidance, Control, and Dynamics, vol.
Sreenatha, 2000, "Fuzzy logic implementation of proportional navigation
guidance," Acta Astronautica, 2000.
The former had an improved guidance subsystem that directed the missile more accurately towards the calculated intercept point, rather than using the "typical" proportional navigation
Banavar, "Proportional navigation
through predictive control," Journal of Guidance, Control, and Dynamics, vol.
Popularly, the Proportional Navigation
law can be decoupled in the "OXY" plane and "OXZ" plane :
The proposed two-phased scheme admits the allowed look angle along with the desired impact angle constraint and switches the proportional navigation
gain at an appropriate instant in the case for engagement.
guidance law (PNGL) [1-4] has been widely used in the area of homing guidance, which can achieve excellent performance in the presence of a nonmaneuvering target.
These evolved into conical-scan trackers with all-aspect capability and proportional navigation
The first term of the right-hand side of the above equation is due to pure proportional navigation
guidance (PPNG) law and the second and third terms pursuit guidance (PG) law.
In any case, a fixed angular error is not enough to defeat a missile using proportional navigation