Metoder för prestandaanalys av styrd granatkastarammunition

Authors:

  • Ulrik Nilsson
  • John Robinson
  • Petter Ögren

Publish date: 2009-12-14

Report number: FOI-R--2617--SE

Pages: 50

Written in: Swedish

Keywords:

  • precision guidance
  • mortar
  • munition
  • seeker
  • IMU
  • GPS
  • laser guidance

Abstract

This report describes ideas of how to estimate a number of relevant performance metrics for Precision Guided Mortar Munitions (PGMM). The PGMM considered acquires the target using a laser sensor and a navigation system including an intertial measurement unit (IMU) and a Global Positioning System (GPS) receiver. The target location is thus either given before launch as a coordinate, or in the final phase of the trajectory by a laser designator pointed at the target, or as a combination of the two. Compared to standard mortar munition, the PGMM adds a number of capabilities to the mortar system, such as improved precision, greater range and increased lethality. The wings and control surfaces enable ight trajectories of greater range, compared to standard ballistic trajectories, and trajectories can be computed so that they do not pass through sensitive areas, avoid obstacles and buildings, and reach the target with a desired angle of incidence. Finally, moving targets can be hit by the PGMM, as long as they are designated by a laser and the laser dot is in view of the seeker when the seeker opens. Tools that can be used to estimate the performance of these new capabilities are described in this report.