Design of amplitude and phase modulated pulse trains with good auttocorrelation properties for radar communications

Abstract

Development of technique for synthesizing multilevel sequences with good correlation properties is very useful for several radar applications where as a set of phase and amplitude coded sequences will be synthesized directly for compression technique. In reality, the signal processing also been significant to transmit or store signals, to enhance desired signal component and to extract useful information carried by signals. Consequently, this paper describes affectively methods to generating the finite length multilevel sequence of any length that have low side lobe energy (SLE) and improved energy ratio (ER) in their autocorrelation function (ACF). Testing for the stability and the analyzing of systems zero pattern using z-transform for the generating sequence indicates a possible position of roots in the radius of circle lies. This is illustrated by application of 13-element Huffman code as a starting sequence, this technique more low complexity and compatible compared inverse filtering technique.

A Hybrid Modified Method of the Sine Cosine Algorithm Using Latin Hypercube Sampling with the Cuckoo Search Algorithm for Optimization Problems

“…In this case, the HMSCACSA was outperformed by the MSCA in the F5 fitness minimization by 3.49%. In the future, a study could be done to apply the proposed HMSCACSA in solving Low Autocorrelation Binary Sequences (LABS) for radar communication systems [52][53][54], with the aim of obtaining optimized high Energy Levels (E), low peak Sidelobe Levels (SL), and a high merit factor (MF). The proposed algorithm can also be applied as a detection algorithm in Massive Multi-Input Multi-Output (MIMO) by searching for the optimum solution vector in the modulation alphabet with linear detection.…”

Evaluation of phase-frequency instability when processing complex radar signals

“…Figure 8 demonstrates graphs of relationship between specific width of correlation function main lobe for complex signal envelope and amplitude envelope dispersion. Various values of the angle modulation index were selected [9,10].…”

Assessment of quality indicators of the automatic control system influence of accident interference

“…Takashi Iida, Warren L. Stutzman, Gary A. Thiele, Constantine A. Balanis, Enson Change, Rick Sturdivant, Mike Harris and others have devoted themselves to the study of AESA, but they have not TELKOMNIKA Telecommun Comput El Control  Assessment of quality indicators of the automatic control system… (Igor Parkhomey) 2071 consider improving the efficiency of broadcasting information in mobile radio systems at the expense of the antenna system of the translator [5][6][7][8][9][10][11]. The task of determining the values of the parameters of system of automatic control (SAC) directional pattern (DP) AESA is reduced to the estimation of the mean-square error (MSE) and quadratic integral estimates (QIE) of the automatic control system with differential feedback.…”