|Statement||F.F. Kretschmer, Jr. and B.L. Lewis|
|Series||NRL report -- 8540|
|Contributions||Lewis, B. L, Naval Research Laboratory (U.S.). Target Characteristics Branch|
|The Physical Object|
|Pagination||iii, 21 p. :|
|Number of Pages||21|
Pulse compression is a signal processing technique commonly used by radar, sonar and echography to increase the range resolution as well as the signal to noise ratio. This is achieved by modulating the transmitted pulse and then correlating the received signal with the transmitted pulse. Signal description. Range resolution. The performance of conventional polyphase pulse compression codes such as the Frank, Frank-Zadoff-Chu (FZC), P1, P2, P3, P4, and Px codes will be compared with Oppermann codes. Abstract. Pulse compression allows a radar system to transmit a pulse of relatively long duration and low peak power to attain the range resolution and detection performance of a Cited by: phase codes limit the chip phase to 0 or π, while polyphase codes support more levels. PC waveforms have their shortcomings, notably computational complexity, high time sidelobes, and Doppler intolerance. Pulse compression of PC waveforms can become computationally burdensome in wideband modes. PC waveforms preclude theCited by:
pulse by increasing the length of pulse, without sacrificing the range resolution associated with a shorter pulse. In this paper the pulse compression technique will be described and compared. Key-Words: Pulse compression, radar, polyphase code, Doppler shift, sidelobe, autocorrelation function _____ 1 Introduction For radar the peak to mean. Radar Waveforms and Signal Processing DOI: /eae In book: Encyclopedia of Aerospace Engineering codes as a new class of Author: Nadav Levanon. Doppler tolerant waveforms, such as the linear-FM modulation and the polyphase code, can be processed using a single matched filter even though the received signal experiences a wide range of doppler frequency mentary codes consist of pairs of equal-length codes which have the property that the time sidelobes of one code are the negative of the other so that they can be canceled. Polyphase Barker codes are found for lengths 64 to 70, 76 and 77 using constrained optimization starting at optimal-ISL codes.1 Keywords: Barker sequence, peak sidelobe level, polyphase Barker, stochastic optimization. I. INTRODUCTION Pulse compression coding is used in radar applications to gain the signal-to-noise (SNR) beneﬁts of a.
B. K. Jennison, “Detection of polyphase pulse compression waveforms using the Radon-ambiguity transform,” IEEE Transactions on Aerospace and Electronic Systems, vol. 39, no. 1, pp. –, View at: Publisher Site | Google ScholarCited by: 2. Kretschmer FF Jr, Lewis BL () Doppler properties of polyphase pulse compression waveforms. IEEE Trans Aerosp Electron Syst 19(4)– CrossRef Google Scholar : Md. Aleem, R. P. Singh, Syed Jalal Ahmad. The chirp pulse compression process transforms a long duration frequency-coded pulse into a narrow pulse of greatly increased amplitude. It is a technique used in radar and sonar systems because it is a method whereby a narrow pulse with high peak power can be derived from a long duration pulse with low peak power. Furthermore, the process offers good range resolution because the half-power. Chapter 7: Pulse Compression with Polyphase Codes. Furthermore, a multiplicity of pulse waveforms are to be applied, dependent on the specific radar task, e.g. search for new targets and acquistion or tracking of already detected targets at various ranges . Despite long pulses the range resolution has to be achieved using suitable.