Reducing cycle slippage errors in loran-c for vehicles undergoing acceleration
Номер патента: CA1278847C
Опубликовано: 08-01-1991
Автор(ы): Per Enge, Robert Goddard
Принадлежит: Megapulse Inc
Опубликовано: 08-01-1991
Автор(ы): Per Enge, Robert Goddard
Принадлежит: Megapulse Inc
Реферат: ABSTRACT Method and apparatus of obviating cycle-locking slippage errors in reception of Loran-C and similar radio-frequency sig-nals caused by receiver location acceleration effects and other distortion effects simulating the same, that comprises, receiving the radio-frequency signals and sampling and tracking the cycles of the signal with a time-constant filter suffi-ciently fast to accommodate for the largest acceleration to be experienced by the receiver location to avoid cycle slippage in locating a predetermined cycle zero crossing, and independently post-filtering sufficiently slowly to smooth the data and with-out interaction with said sampling.
Reliable cycle selection in LORAN-C system
Номер патента: US3934254A. Автор: William K. Vogeler,Donald E. Shorter. Владелец: Telcom Inc. Дата публикации: 1976-01-20.