This paper presents a real-time cycle slip detection and repair strategy for the BDS-3 triplefrequency and quad-frequency phase observations. For the triple-frequency phase observations, two EWL code-phase combinations and one GF-phase combination are jointly employed to detect and repair cycle slips. Based on the different performances in the success of cycle slip detection and repair, this paper uses GF-phase combinations to detect and repair cycle slip individually. Specifically, the GF-phase combination with a large MTIV value is applied to detect cycle slip possessing the stronger ability to resist ionospheric delay. Besides, the GF-phase combination with a higher success rate of cycle slip repair is selected to repair cycle slip, and the classic LAMBDA method and Ratio test are implemented to fix the cycle slip solution and evaluate reliability separately. For the quad-frequency phase observations, we employ a supernumerary EWL combination based on the triple-frequency, which can directly determine the cycle slip value of the 4th frequency. The results show that the cycle slip estimation value still can detect and repair all real and artificially added cycle slips even under harsh conditions. Moreover, the overall cycle slip repair success rate is greater than 99.99 %., Hao Wang, Shuguo Pan, Wang Gao, Fei Ye, Chun Ma, Ju Tao and Yunfeng Wang., and Obsahuje bibliografii
The attention is directed on some specific basic concepts, quantities, ideas and mathematical relations of pulse radar signal analysis and processing under stationary linear polarized high-frequency harmonic supporting electric component. The text contains the definition of a monofrequency radar pulse and its complex representation, interpretation of the radar resolution cell volume, Fourier transform alternatives of a radar signal, explaining the principle and parts of its uniform digitalization, vector and matrix representation of a discrete pulse radar signal, reason and purpose of its processing data correction, and comment of kinds and use of similarity correlations of its pair forms., Pozornost je zaměřena na některé specifické základní pojmy, veličiny, představy a matematické relace analýzy a zpracování pulzního radarového signálu se stacionární lineárně polarizovanou vysokofrekvenční harmonickou nosnou elektrickou složkou. Text postupně obsahuje vymezení monofrekvenčního radarového pulzu a jeho komplexní reprezentace, interpretaci rozlišovací buňky radaru, alternativy Fourierovy transformace radarového signálu, vysvětlení principu a složek jeho rovnoměrné digitalizace, vektorovou a maticovou reprezentaci diskrétního pulzního radarového signálu, zdůvodnění a účel korekčního součtu dat při jeho zpracování a vysvětlení druhů a užití srovnávacích korelací jeho párových forem., and Pokračování v příštím čísle