By Norman Friedman
Might be the best visible distinction among the war¬ships of 1940 and people of 1945 used to be the expansion of a woodland of electronics, so much particularly radar - and the wooded area has persisted to develop ever given that. even though the root of radar is widely known, the very wealthy number of antennas and platforms in carrier is because of a sequence of issues much less extensively understood. but an appreciation of those complexities offers a important hyperlink among the various designs seen on warships and the very massive technical ingenuity underlying them.
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Extra resources for Naval Radar
In that case, the performances can be described by the periodic ambiguity function (PAF) . 18) applies to any pulse duration, up to and including a duty cycle of 100%, which defines a periodic CW signal. e. 18) reduces to the AF of a single pulse, namely |χTr (τ , v)| = |χ (τ , v)|. The Doppler resolution of a pulse train equals the distance from zero to the first null of the | sin (N πvTr )/[N sin (π vTr )]| expression, which appears at v = (NTr )−1 . This resolution is usually orders of magnitude smaller than the Doppler resolution of a single pulse ν = 1/tp .
Transmit codes and receive filters for radar. IEEE Sig. Proc. tex April 17, 2012 16: 23 Page 35 Classical radar waveform design           35 Chen R and Cantrell B. Highly bandlimited radar signals. 2002 IEEE Radar Conference, Long Beach, CA, April 2002, pp. 220–226 Golay MJE. Complementary series. IRE Trans. IT, 1961;7(2):82–87 Maron, DE. Non-periodic frequency-jumped burst waveforms. Proceedings of the IEE International Radar Conference, London, October 1987, pp.
These properties categorize it as a low probability of intercept (LPI) signal, and make multicarrier waveforms attractive to netted or multiple-input multiple-output (MIMO) radar systems. 12 Continuous periodic waveforms In pulse compression the actual pulse width increased, allowing the radar to use a low-peak-power transmitter. The maximum possible pulse width is the pulse interval, which makes the radar a CW radar. In CW signal, the peak power and the average power are equal. 14). 10, but without delay sidelobes.