TY - GEN
T1 - Incoherent compression of complementary code pairs for laser ranging and detection
AU - Kravitz, Daniel
AU - Grodensky, Daniel
AU - Zadok, Avi
AU - Levanon, Nadav
PY - 2013
Y1 - 2013
N2 - A scheme for the incoherent compression of complementary code pairs is proposed and demonstrated in a laser range-finding experiment. The off-peak aperiodic auto-correlations of complementary bipolar codes sum up to zero, hence they are attractive for radar and laser ranging systems. In incoherent compression, the two codes are converted to unipolar representations using a pulse position modulation algorithm prior to transmission. Following incoherent detection, the two received echoes are compressed through digital filtering, and added together to obtain strong sidelobe suppression. The scheme does not require the preservation of phase information in transmission or reception, and the length of the code pairs is scalable through simple procedures. Incoherent compression is particularly attractive for photonic implementations, in which direct detection is phase insensitive. A peak-to-sidelobe ratio of 42 dB is obtained in a laser range-finding experiment using 832 bits-long codes.
AB - A scheme for the incoherent compression of complementary code pairs is proposed and demonstrated in a laser range-finding experiment. The off-peak aperiodic auto-correlations of complementary bipolar codes sum up to zero, hence they are attractive for radar and laser ranging systems. In incoherent compression, the two codes are converted to unipolar representations using a pulse position modulation algorithm prior to transmission. Following incoherent detection, the two received echoes are compressed through digital filtering, and added together to obtain strong sidelobe suppression. The scheme does not require the preservation of phase information in transmission or reception, and the length of the code pairs is scalable through simple procedures. Incoherent compression is particularly attractive for photonic implementations, in which direct detection is phase insensitive. A peak-to-sidelobe ratio of 42 dB is obtained in a laser range-finding experiment using 832 bits-long codes.
KW - Complementary code pairs
KW - LADAR
KW - Matched filtering
KW - Optical signal processing
KW - Pulse compression
KW - Ranging measurements
UR - http://www.scopus.com/inward/record.url?scp=84893230684&partnerID=8YFLogxK
U2 - 10.1109/comcas.2013.6685280
DO - 10.1109/comcas.2013.6685280
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AN - SCOPUS:84893230684
SN - 9781467357562
T3 - 2013 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2013
BT - 2013 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2013
T2 - 2013 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2013
Y2 - 21 October 2013 through 23 October 2013
ER -