scholarly journals Modelling of the anti-tank guided missile scattering field and radar performance evaluation in terms of missile detection

2021 ◽  
pp. 79-89
Author(s):  
K. Yu. Zavodskikh ◽  
I. F. Kupryashkin
Keyword(s):  
Performance Evaluation ◽  
Radiation Power ◽  
Radiation Detection ◽  
Protection System ◽  
Echo Signal ◽  
Coherent Integration ◽  
Broadband Signal ◽  
Scattering Field ◽  
Active Protection ◽  
Flight Profile

The study presents the results achieved in an analysis of the variation of the level of an echo signal generated by the FGM-148 Javelin anti-tank missile, received by the active protection system radar with consideration given to the target attack flight profile. For our study, we use the results of modelling of the missile’s scattering field at frequencies of 1, 3, 6, and 10 GHz using the Altair FEKO CAD suite. According to estimated data, a radar using the frequency-modulated signal and operating at a medium radiation power of up to 1 W is able to detect a missile at a distance of at least 1,000 m. The results show that a combination of low power and a continuous broadband signal (100…150 MHz) along with coherent integration to units of seconds ensures concealed operations of the active protection system radar (estimated range of its radiation detection by a reconnaissance radar is not greater than 10 km).

scholarly journals Numerical Analysis of the Effects of the Geometric and Weight Parameters on the Exterior Ballistics of a Designed Counterprojectile

2017 ◽  
Vol 8 (1) ◽  
pp. 89-100
Author(s):  
Jakub MICHALSKI ◽  
Zbigniew SURMA ◽  
Marta CZYŻEWSKA
Keyword(s):  
Aerodynamic Characteristics ◽  
Protection System ◽  
Software Environment ◽  
Active Protection ◽  
Protected Object ◽  
Motion Parameters ◽  
Exterior Ballistics ◽  
Technology Demonstrator ◽  
Selection Of

This paper presents a selection of deliverables of a research project intended to develop a technology demonstrator for an active protection system smart counterprojectile. Numerical simulations were completed to analyse the effects of geometry and weight of the counterprojectile warhead on the counterprojectile flight (motion) parameters. This paper investigates four variants of the counterprojectile warhead shape and three variants of the counterprojectile warhead weight. Given the investigated geometric and weight variants, the PRODAS software environment was used to develop geometric models of the counterprojectile warhead, followed by the determination of the model aerodynamic characteristics. The final deliverable of this work are the results of the numerical simulation of the counterprojectile motion along the initial flight path length. Given the required activation of the active protection system in direct proximity of the protected object, the analyses of counterprojectile motion parameters were restricted to a distance of ten-odd metres from the counterprojectile launching system.

A dynamic weighted algorithm for multiple radar fusion in an active protection system

2019 ◽  
pp. 154851291989092
Author(s):  
Jinli Wang ◽  
Haiping Song ◽  
Riming Chen ◽  
Yaning Zhang
Keyword(s):  
Detection System ◽  
Radar Data ◽  
Weighting Factor ◽  
Protection System ◽  
Threat Detection ◽  
Fusion Model ◽  
Time Dynamic ◽  
Weighted Fusion ◽  
Active Protection ◽  
Weighted Algorithm

The threat detection system based on short-range radars is an essential part of the active protection system (APS) of armored vehicles. The multi-radar data fusion problem is one of the crucial issues in the APS. Firstly, a general algorithm for multi-radar coordinates transformation is given. Then, based on the weighted fusion model and the trajectory characteristics of targets in the APS, a real-time dynamic weighting factor derivation algorithm is proposed. The algorithm is simulated in a dual-radar threat tracking and ballistic prediction scenario. The results prove the correctness and effectiveness of the algorithm.

scholarly journals UV Radiation Detection Using Optical Sensor Based on Eu3+ Doped PMMA

2016 ◽  
Vol 23 (4) ◽  
pp. 615-621 ◽  
Author(s):  
Piotr Miluski ◽  
Marcin Kochanowicz ◽  
Jacek Żmojda ◽  
Dominik Dorosz
Keyword(s):  
Optical Fibre ◽  
Optical Sensor ◽  
Radiation Power ◽  
Radiation Detection ◽  
Visible Range ◽  
Third Harmonic ◽  
Detection Systems ◽  
Optical Fibre Sensor ◽  
Intensity Measurements

AbstractProgress in UV treatment applications requires new compact and sensor constructions. In the paper a hybrid (organic-inorganic) rare-earth-based polymeric UV sensor construction is proposed. The efficient luminescence of poly(methyl) methacrylate (PMMA) matrix doped by europium was used for testing the optical sensor (optrode) construction. The europium complex assures effective luminescence in the visible range with well determined multi-peak spectrum emission enabling construction of the optrode. The fabricated UV optical fibre sensor was used for determination of Nd:YAG laser intensity measurements at the third harmonic (355 nm) in the radiation power range 5.0-34.0 mW. The multi-peak luminescence spectrum was used for optimization of the measurement formula. The composition of luminescent peak intensity enables to increase the slope of sensitivity up to −2.8 mW-1. The obtained results and advantages of the optical fibre construction enable to apply it in numerous UV detection systems.

Numerical Simulation of Intercepting Efficiency on Airbag Active Protection System

2010 ◽  
Vol 156-157 ◽  
pp. 360-366
Author(s):  
Kun Zhong ◽  
Zhong Hua Du ◽  
Liang Zhou ◽  
Li Li Song
Keyword(s):  
Element Model ◽  
Protection System ◽  
Working Process ◽  
3D Finite Element ◽  
Advantages And Disadvantages ◽  
Active Protection ◽  
New Type ◽  
Simulation Results ◽  
Set Up ◽  
Metal Jet

Based on the advantages and disadvantages of existing active protection system, this paper proposes a new type of airbag active protection system. The components and working process of the system is introduced. Then taking the physical process of airbag active protection system against a rocket projectile as an example, a 3D finite element model (FEM) of airbag and rocket projectile is set up. With the assistance of the software LS-DYNA3D, through performing the simulation when the rocket projectile touched the airbag with an angle 30° from the normal interface, the intercepting efficiency is calculated and analyzed in the simulation. Results show that airbag can deform and rupture the metal jet generated by the rocket projectile, thus greatly reduce its armor penetrating effect. Finally, it shows excellent protective effect of the airbag active protection system.

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