A modification to the Costas signal is suggested. It involves an increase of the frequency separa... more A modification to the Costas signal is suggested. It involves an increase of the frequency separation ¢f beyond the inverse of the subpulse duration tb, combined with adding linear FM (LFM) with bandwidth B, in each subpulse. Specific relationships between ¢f and B will prevent autocorrelation grating lobes, that would normally appear when tb¢f> 1.
Signal Processing, Sensor Fusion, and Target Recognition XX, 2011
This paper presents a multiple interacting multiple model (MIMM) procedure to estimate the state ... more This paper presents a multiple interacting multiple model (MIMM) procedure to estimate the state of thrusting/ ballistic projectiles in the atmosphere for the purpose of impact point prediction (IPP). Given a very short time span of observations, the strong interaction between drag and thrust in the dynamic model, in the sense of ambiguity in the estimation, significantly affects the estimation
Proceedings of the 2004 IEEE Radar Conference (IEEE Cat. No.04CH37509), 2004
Two recent results are combined to create a radar signal with improved performance. The signal is... more Two recent results are combined to create a radar signal with improved performance. The signal is created initially from a coherent train of N identical modified Costas pulses. An orthogonal set of N phase codes is then overlayed on the N pulses.
Mathematical Properties of Sequences and Other Combinatorial Structures, 2003
A coherent train of identical linear FM (LFM) pulses is used extensively in radar because of its ... more A coherent train of identical linear FM (LFM) pulses is used extensively in radar because of its good range and Doppler resolution. Its relatively high autocorrelation function (ACF) sidelobes are sometimes reduced through spectrum shaping (e.g., nonlinear FM, or intrapulse weighting on receive). We show how to completely remove most of the ACF sidelobes about the mainlobe peak, without any
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in an... more No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States ...
A modification to the Costas signal is suggested. It involves an increase of the frequency separa... more A modification to the Costas signal is suggested. It involves an increase of the frequency separation ¢f beyond the inverse of the subpulse duration tb, combined with adding linear FM (LFM) with bandwidth B, in each subpulse. Specific relationships between ¢f and B will prevent autocorrelation grating lobes, that would normally appear when tb¢f> 1.
Signal Processing, Sensor Fusion, and Target Recognition XX, 2011
This paper presents a multiple interacting multiple model (MIMM) procedure to estimate the state ... more This paper presents a multiple interacting multiple model (MIMM) procedure to estimate the state of thrusting/ ballistic projectiles in the atmosphere for the purpose of impact point prediction (IPP). Given a very short time span of observations, the strong interaction between drag and thrust in the dynamic model, in the sense of ambiguity in the estimation, significantly affects the estimation
Proceedings of the 2004 IEEE Radar Conference (IEEE Cat. No.04CH37509), 2004
Two recent results are combined to create a radar signal with improved performance. The signal is... more Two recent results are combined to create a radar signal with improved performance. The signal is created initially from a coherent train of N identical modified Costas pulses. An orthogonal set of N phase codes is then overlayed on the N pulses.
Mathematical Properties of Sequences and Other Combinatorial Structures, 2003
A coherent train of identical linear FM (LFM) pulses is used extensively in radar because of its ... more A coherent train of identical linear FM (LFM) pulses is used extensively in radar because of its good range and Doppler resolution. Its relatively high autocorrelation function (ACF) sidelobes are sometimes reduced through spectrum shaping (e.g., nonlinear FM, or intrapulse weighting on receive). We show how to completely remove most of the ACF sidelobes about the mainlobe peak, without any
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in an... more No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States ...
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