A Multiple Model Approach for Estimating Roll Rate of a Very Fast Spinning Artillery Rocket

Aykenar, Mehmet Burak; Boz, Ihsan Caner; Soysal, Gökhan; Efe, Murat

doi:10.23919/fusion45008.2020.9190497

Cited by 1 publication

(1 citation statement)

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“…One challenge with high-speed spinning projectiles is to accurately estimate altitudes. Depending on projectile specifications, different methods can be considered, as in [ 25 , 26 ] by exploiting GNSS signals or in [ 9 , 22 ] by using accelerometers, gyrometers or magnetometers. Nevertheless gyrometers are commonly omitted because, under cost limits, many of them saturate and do not resist to launch phases.…”

Section: Related Workmentioning

confidence: 99%

LSTM-Based Projectile Trajectory Estimation in a GNSS-Denied Environment

Roux

Changey

Weber

et al. 2023

Sensors

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This paper presents a deep learning approach to estimate a projectile trajectory in a GNSS-denied environment. For this purpose, Long-Short-Term-Memories (LSTMs) are trained on projectile fire simulations. The network inputs are the embedded Inertial Measurement Unit (IMU) data, the magnetic field reference, flight parameters specific to the projectile and a time vector. This paper focuses on the influence of LSTM input data pre-processing, i.e., normalization and navigation frame rotation, leading to rescale 3D projectile data over similar variation ranges. In addition, the effect of the sensor error model on the estimation accuracy is analyzed. LSTM estimates are compared to a classical Dead-Reckoning algorithm, and the estimation accuracy is evaluated via multiple error criteria and the position errors at the impact point. Results, presented for a finned projectile, clearly show the Artificial Intelligence (AI) contribution, especially for the projectile position and velocity estimations. Indeed, the LSTM estimation errors are reduced compared to a classical navigation algorithm as well as to GNSS-guided finned projectiles.

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