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Performance analysis of single-frequency MPPSK integrated system for ranging applications.

Yao Y, Wu L - ScientificWorldJournal (2014)

Bottom Line: In particular, requirements that allow for employing such special parameter values for range measurements with high accuracy and high range are investigated.Moreover, high repetition frequency (HRF) biphase code MPPSK pulse train base on m sequence is presented, and the ranging accuracy of the proposed signal with the match filter processing is deduced.In addition to theoretical considerations, the paper presents system simulations and measurement results of single-frequency MPPSK integrated systems, demonstrating the high-performance of ranging applications.

View Article: PubMed Central - PubMed

Affiliation: School of Information Science and Engineering, Southeast University, Nanjing 210096, China.

ABSTRACT
The dual-frequency MPPSK-MODEM is a flexible platform. When ranging accuracy request is low or platform is particularly limited by power, the platform would perform both data transmission and range measurement with single-frequency modes. In this paper, the ranging resolution of MPPSK pulse waveforms with the match filter and impacting filter processing are discussed, respectively. Also, the parameter selection of MPPSK modulator for ranging is considered. In particular, requirements that allow for employing such special parameter values for range measurements with high accuracy and high range are investigated. Moreover, high repetition frequency (HRF) biphase code MPPSK pulse train base on m sequence is presented, and the ranging accuracy of the proposed signal with the match filter processing is deduced. In addition to theoretical considerations, the paper presents system simulations and measurement results of single-frequency MPPSK integrated systems, demonstrating the high-performance of ranging applications.

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HRF biphase code MPPSK pulse train.
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fig5: HRF biphase code MPPSK pulse train.

Mentions: High repetition frequency (HRF) coherent pulse train signal is frequently used in the field of high-performance radar [14]. The waveform has the capability of high range resolution the same as narrow pulse, and it also has the advantages of fine frequency resolution because of quite long durations. Transmit-receive community antenna system could easily be achieved with pulse train signals. It does not have the problem of power leakage in the transmitter. Complex envelop of HRF coherent pulse train can be expressed as(5)s(t)=1Np∑i = 0Np−1u1(t−iTr),where Np is the number of pulses, Tr is pulse interval, and the ambiguity function of a HRF coherent pulse train signal is(6)/χ(τ,fd)/=1Np∑q = −(Np−1)Np−1/χ1(τ−qTr,fd)/·/sin[πfd(Np−/q/Tr)]sin(πfdTr)/.Range ambiguity function is(7)/χ(τ,0)/=/∑q = −(Np−1)Np−1(1−/q/Np)(1−/τ−qTr/tp)/.Velocity ambiguity function is(8)/χ(0,fd)/=/1Npsin(πfdtp)πfdtp·sin(πfdNpTr)sin(πfdTr)/,where tp is the width of single pulse. Set the parameters as follows: pulse interval is Tr = 10tp, the number of pulses is Np = 5, and the range and velocity ambiguity function of coherent pulse train signal are shown in Figure 5.


Performance analysis of single-frequency MPPSK integrated system for ranging applications.

Yao Y, Wu L - ScientificWorldJournal (2014)

HRF biphase code MPPSK pulse train.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4129174&req=5

fig5: HRF biphase code MPPSK pulse train.
Mentions: High repetition frequency (HRF) coherent pulse train signal is frequently used in the field of high-performance radar [14]. The waveform has the capability of high range resolution the same as narrow pulse, and it also has the advantages of fine frequency resolution because of quite long durations. Transmit-receive community antenna system could easily be achieved with pulse train signals. It does not have the problem of power leakage in the transmitter. Complex envelop of HRF coherent pulse train can be expressed as(5)s(t)=1Np∑i = 0Np−1u1(t−iTr),where Np is the number of pulses, Tr is pulse interval, and the ambiguity function of a HRF coherent pulse train signal is(6)/χ(τ,fd)/=1Np∑q = −(Np−1)Np−1/χ1(τ−qTr,fd)/·/sin[πfd(Np−/q/Tr)]sin(πfdTr)/.Range ambiguity function is(7)/χ(τ,0)/=/∑q = −(Np−1)Np−1(1−/q/Np)(1−/τ−qTr/tp)/.Velocity ambiguity function is(8)/χ(0,fd)/=/1Npsin(πfdtp)πfdtp·sin(πfdNpTr)sin(πfdTr)/,where tp is the width of single pulse. Set the parameters as follows: pulse interval is Tr = 10tp, the number of pulses is Np = 5, and the range and velocity ambiguity function of coherent pulse train signal are shown in Figure 5.

Bottom Line: In particular, requirements that allow for employing such special parameter values for range measurements with high accuracy and high range are investigated.Moreover, high repetition frequency (HRF) biphase code MPPSK pulse train base on m sequence is presented, and the ranging accuracy of the proposed signal with the match filter processing is deduced.In addition to theoretical considerations, the paper presents system simulations and measurement results of single-frequency MPPSK integrated systems, demonstrating the high-performance of ranging applications.

View Article: PubMed Central - PubMed

Affiliation: School of Information Science and Engineering, Southeast University, Nanjing 210096, China.

ABSTRACT
The dual-frequency MPPSK-MODEM is a flexible platform. When ranging accuracy request is low or platform is particularly limited by power, the platform would perform both data transmission and range measurement with single-frequency modes. In this paper, the ranging resolution of MPPSK pulse waveforms with the match filter and impacting filter processing are discussed, respectively. Also, the parameter selection of MPPSK modulator for ranging is considered. In particular, requirements that allow for employing such special parameter values for range measurements with high accuracy and high range are investigated. Moreover, high repetition frequency (HRF) biphase code MPPSK pulse train base on m sequence is presented, and the ranging accuracy of the proposed signal with the match filter processing is deduced. In addition to theoretical considerations, the paper presents system simulations and measurement results of single-frequency MPPSK integrated systems, demonstrating the high-performance of ranging applications.

Show MeSH
Related in: MedlinePlus