New Frequency Hopping Sequence Construction of Location Communication System under Mine

Main problems existing in location communication systems under mine(LCSM) are analyzed.A new frequency hopping sequence(FHS) is presented and is applied to LCSM,so the performance of LCSM is improved.The basic sequence is produced by prime method,and the FHS is produced by improved interleave technique and characteristics of no-hit-zone code.The value of Hamming correlation is zero near zero shifting.The FHS has the same natures as prime sequence when shifting is arbitrary.Natures of the new FHS are proved using mathematical method.Construction example and experiment data are presented.The spot experiment shows that error rate of the LCSM is effectively reduced with the new FHS,and the reliability of LCSM is enhanced.