Code tracking performance of DS/FH spread spectrum signal for TT&amp;#x00026;C

Meng, Shu; Yang, Wenguo; Lu, Wen‐Jun; Liu, Jia; Jinfeng, Yu

doi:10.1109/icime.2010.5477657

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…[2] Namely, i) Signal acquisition becomes a three-dimensional searching process. ii) Methods of Ranging and velocity measurement in TT&C system needs to be modified.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Chip Scintillations in non-coherent DLL for DS-FH signal in satellite telemetry link

Chen

Zhu

2011

2011 IEEE 13th International Conference on Communication Technology

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FH signal in Satellite TT&C link yields divergence when traveling through ionosphere, which brings about "Chip Scintillations" of PN code chips at the transition of two adjacent frequency hops in DS-FH signal. Signal model of DS-FH TT&C link in IONOSPHERE is established for further study and deterioration in PN code tracking of DLL caused by chip scintillations is investigated. Simulation results for different application scenarios are valuable for the design of Secure TT&C system of satellite.

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“…[2] Namely, i) Signal acquisition becomes a three-dimensional searching process. ii) Methods of Ranging and velocity measurement in TT&C system needs to be modified.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Chip Scintillations in non-coherent DLL for DS-FH signal in satellite telemetry link

Chen

Zhu

2011

2011 IEEE 13th International Conference on Communication Technology

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“…There is also some paper analyzing the code tracking performance in the presence of residual frequency and finite front-end bandwidth. Doppler hopping brings no code Doppler shift but frequency modulation to the incoming signal, which deteriorates the cross correlation between the incoming PN code and the reference code [2].For the Direct Sequence Spread Spectrum System, some schemes aided by the carrier tracking loop on PN code tracking loop exist and they have the sufficient accuracy for ranging [3]. But this aided method is based on the fixed ratio of carrier to the code rate.…”

Section: Introductionmentioning

confidence: 99%

A Scheme on PN Code Tracking of DS/FH Signals for Telemetry, Tracking, and Commanding (TT&C)

Chen¹,

Li²,

Wang³

2011

IJWMT

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The impact of Doppler frequency hopping on code tracking performance is simulated. A design on pseudo-noise (PN) Code Tracking Loop aided by the carrier tracking loop according to the carrier frequency hoping pattern is proposed in this paper. This scheme can be applied in the Telemetry, Tracking, and Commanding system which uses Direct Sequence/Frequency Hopping Spread Spectrum (DS/FH) hybrid spread spectrum technology. Simulations of the code tracking loop under different carrier to noise ratios are compared based on this scheme. The results show this method on PN code tracking of DS/FH signals is valid

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