Ambiguity analysis for pulse compression radar using Gold code sequences

Hale, T.B.; Temple, Michael A.; Crossley, Benjamin L.

doi:10.1109/nrc.2001.922961

Cited by 6 publications

(6 citation statements)

References 2 publications

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“…Ambiguity analysis further shows the advantages of TDCS radar over PN sequences. Ambiguity analysis follows the development from 19 and focuses on the Doppler and time cuts of the complex ambiguity function. The complex ambiguity function is defined in equation 7.…”

Section: Resultsmentioning

confidence: 99%

<title>Transform domain communication system as an ultra-wideband radar</title>

Nunez

Caldwell

2005

Radar Sensor Technology IX

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Traditionally, ultra-wideband radars increase bandwidth by using shorter pulses. However, by decreasing the pulse width, the power on target decreases and radar detection probabilities decrease. Therefore, new approaches to increase bandwidth are needed that still have adequate power on target. One radical new approach is to use a Transform Domain Communication System (TDCS) as an ultra-wideband radar. The primary advantage of this technique is that it has properties similar to Gaussian noise meaning that the radar would improve bandwidth similar to pseudo-noise (PN) sequences.Also, based on the number of carriers used to generate the TDCS code, multiple pulses can be made mutually orthogonal. This orthogonality can be exploited to effectively increase the maximum unambiguous range for pulse-Doppler radars up to the range of the horizon. In essence, TDCS radar possesses a high pulse repetition frequency (PRF) for velocity estimation and large unambiguous range.

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Section: Resultsmentioning

confidence: 99%

<title>Transform domain communication system as an ultra-wideband radar</title>

Nunez

Caldwell

2005

Radar Sensor Technology IX

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“…Comparing the other code techniques, such as Barker code [14] and Gold code [15], the PRN code technique has the advantage of being easily generated and high accuracy. The distance between the target and the transceiver can be calculated as (4) where is the speed of the microwave signal.…”

Section: Pulsed Prn Code Radar Principlementioning

confidence: 99%

A High-Range-Accuracy and High-Sensitivity Harmonic Radar Using Pulse Pseudorandom Code for Bee Searching

Tsai

Jau

Kuo

et al. 2013

IEEE Trans. Microwave Theory Techn.

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This paper presents a 9.4/18.8-GHz harmonic radar to investigate the behavior of bees with colony collapse disorder. The challenges of using harmonic radar for bee searching include the requirements of high range accuracy and high sensitivity. A new harmonic radar using the pseudorandom code positioning technique to simultaneously achieve high range accuracy and high sensitivity is proposed. This study also proposes a new method to cancel the local leakage to further improve sensitivity. To realize the transponder, a compact antenna is designed using the topology characteristics of the composite right/left-handed transmission-line concept. The measured sensitivity of the transceiver is 120 dBm, which is 27 dB lower than the noise level. Field testing results demonstrate a 60-m detection range within 1-m distance error with 1.75-W transmitting power. The significant improvement of the sensitivity and the range accuracy reveal the advantages of applying the code-positioning technique to the harmonic radar.

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“…From a pair of preferred sequences, the Gold sequences are generated by the modulo-2 sum of the first with shifted versions of the second or vice-versa. And the Gold sequences set size is N+1 [19] .…”

Section: Gold Sequencementioning

confidence: 99%

On orthogonal waveform design for MIMO sonar

Cai

2010

2010 International Conference on Intelligent Control and Information Processing

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MIMO sonar that transmits orthogonal waveforms via transmitter sensors is an emerging technology that has significant application potential. Compared to standard phased array sonar, orthogonal transform waveform can bring many advantages including improved angular resolution and multi-target detection ability. We derive in this paper a novel binary-phase waveform design coded by Gold sequences. This phase code is computationally efficient compared to other codes previously proposed in the literature. We provide some numerical examples to demonstrate the performances of the new code sequence.

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Ambiguity analysis for pulse compression radar using Gold code sequences

Cited by 6 publications

References 2 publications

<title>Transform domain communication system as an ultra-wideband radar</title>

<title>Transform domain communication system as an ultra-wideband radar</title>

A High-Range-Accuracy and High-Sensitivity Harmonic Radar Using Pulse Pseudorandom Code for Bee Searching

On orthogonal waveform design for MIMO sonar

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