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Title:
AMBIGUITY FIXING METHOD AND SYSTEM AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/065840
Kind Code:
A1
Abstract:
An ambiguity fixing method and system and a storage medium. The method comprises: obtaining ephemeris data, an observation value and differential data of a satellite of the current epoch, and a fixed double difference ambiguity of a satellite, which does not undergo a cycle slip, of a previous epoch; calculating multiple first double difference ambiguities of the current epoch, solving a first position according to a fixed double difference ambiguity in the multiple first double difference ambiguities, and fixing other double difference ambiguities, which are not fixed, in the multiple first double difference ambiguities to obtain all the fixed first double difference ambiguities of the current epoch as a set of first double difference ambiguities; obtaining an inherited double difference ambiguity, solving a second position, calculating a fixed double difference ambiguity of the current epoch, and using the fixed double difference ambiguity and the inherited double difference ambiguity as second double difference ambiguities to obtain a set of second double difference ambiguities; obtaining an ambiguity collection according to the set of first double difference ambiguities and the set of second double difference ambiguities; and calculating a position-fixed solution. The system comprises a data obtaining unit, a search fixing unit, a recursive inheritance unit, a merging unit, and a solving unit. The storage medium stores a computer executable instruction. The computer executable instruction is executed by a processor to implement the steps of the method.

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Inventors:
LIU QIAN (CN)
LI CHUNYU (CN)
Application Number:
PCT/CN2022/116382
Publication Date:
April 27, 2023
Filing Date:
August 31, 2022
Export Citation:
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Assignee:
QIANXUN SPATIAL INTELLIGENCE INC (CN)
International Classes:
G01S19/44; G01S19/41
Domestic Patent References:
WO2001022111A12001-03-29
WO2017004047A12017-01-05
Foreign References:
CN111273328A2020-06-12
CN113138402A2021-07-20
US20120176271A12012-07-12
CN107422343A2017-12-01
CN106646565A2017-05-10
CN110531392A2019-12-03
CN113009537A2021-06-22
CN106093991A2016-11-09
CN110646822A2020-01-03
CN111175796A2020-05-19
CN107607973A2018-01-19
CN106249256A2016-12-21
CN110824522A2020-02-21
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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