TY - GEN
T1 - An improved FFT acquisition method for weak signal in deep-space communications
AU - Pan, Xi
AU - Chen, Ming
PY - 2010
Y1 - 2010
N2 - In deep space communication, due to the restricted transmitted power, sharply-attenuated of signals because of long distance and all the noise in space, the received signals from the deep space have low signal to noise ratio (SNR) and high carrier phase noise. The Ultra long point FFT algorithm and binary branch acquisition technique were studied and the modified binary branch FFT acquisition method was proposed. The more flexible method has faster acquisition ability and higher detection probability. Based on the software radio technology, the hardware platform of "FPGA + DSP" was built to implement the 216 FFT using modified two-arm acquisition technique, the carrier wave acquisition and tracking were implemented on the condition of extra-low SNR and the test result indicated the method in this paper can implement the quick detection under the 16dBHz SNR or below.
AB - In deep space communication, due to the restricted transmitted power, sharply-attenuated of signals because of long distance and all the noise in space, the received signals from the deep space have low signal to noise ratio (SNR) and high carrier phase noise. The Ultra long point FFT algorithm and binary branch acquisition technique were studied and the modified binary branch FFT acquisition method was proposed. The more flexible method has faster acquisition ability and higher detection probability. Based on the software radio technology, the hardware platform of "FPGA + DSP" was built to implement the 216 FFT using modified two-arm acquisition technique, the carrier wave acquisition and tracking were implemented on the condition of extra-low SNR and the test result indicated the method in this paper can implement the quick detection under the 16dBHz SNR or below.
UR - http://www.scopus.com/inward/record.url?scp=77953403423&partnerID=8YFLogxK
U2 - 10.1117/12.855385
DO - 10.1117/12.855385
M3 - Conference contribution
AN - SCOPUS:77953403423
SN - 9780819480798
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - International Conference on Space Information Technology 2009
T2 - International Conference on Space Information Technology 2009
Y2 - 26 November 2009 through 27 November 2009
ER -