Capture zone of biased proportional navigation guidance law

Specified impact angle can considerably increase missile's lethality in the terminal engagement. Proportional navigation guidance (PNG) law and its variants are widely known and used due to its inherent simplicity and ease of implementation. In this paper, the capture zone of biased PNG (BPNG) law will be researched in depth. The influence of the parameters in BPNG law will be discussed in detail, and the capture zone about these parameters are given. Numerical simulations are used to demonstrate the obtained results.