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Title:
REAL-TIME ESTIMATION AND QUALITY CONTROL METHOD FOR GNSS SATELLITE CLOCK DIFFERENCE
Document Type and Number:
WIPO Patent Application WO/2019/024895
Kind Code:
A1
Abstract:
A real-time estimation and quality control method for a GNSS satellite clock difference, comprising the following steps: establishing a square root information filtering algorithm model to process noise; performing square root information smoothing; and performing real-time quality control based on square root information filtering. The method can realise real-time clock difference data pre-processing and efficient quality control, can efficiently discover a problem observation quantity, and avoids filter divergence, so as to realise stable estimation of a real-time clock difference, satisfying the requirements of real-time high-precision positioning.

Inventors:
XIONG, Chao (Room J165, 1st FloorBuliding 64, No.1436 Jungong Rd, Yangpu District Shanghai 3, 200433, CN)
CUI, Hongzheng (Room J165, 1st FloorBuliding 64, No.1436 Jungong Rd, Yangpu District Shanghai 3, 200433, CN)
ZHOU, Peiyuan (Room J165, 1st FloorBuliding 64, No.1436 Jungong Rd, Yangpu District Shanghai 3, 200433, CN)
NIAN, Jinfei (Room J165, 1st FloorBuliding 64, No.1436 Jungong Rd, Yangpu District Shanghai 3, 200433, CN)
YANG, Sainan (Room J165, 1st FloorBuliding 64, No.1436 Jungong Rd, Yangpu District Shanghai 3, 200433, CN)
Application Number:
CN2018/098363
Publication Date:
February 07, 2019
Filing Date:
August 02, 2018
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Assignee:
QIANXUN POSITION NETWORK CO. LTD. (Room J165, 1st FloorBuliding 64, No.1436 Jungong Rd, Yangpu District Shanghai 3, 200433, CN)
International Classes:
G01S19/27
Attorney, Agent or Firm:
HIWAYS LAW FIRM (15th Floor, Part A Eton Place, 69 Dongfang Rd, Shanghai 0, 200120, CN)
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