Built-in UHF radio station receiving sensitivity testing method based on GNSS receiver
A technology of receiving sensitivity and testing method, which is applied in the testing field of receiving sensitivity based on the built-in UHF radio of GNSS receiver, which can solve problems such as unsatisfactory measured results, heavy workload, troublesome testers, etc., and achieve the effect of improving work efficiency
Active Publication Date: 2016-12-28
SHANGHAI HUACE NAVIGATION TECH
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Problems solved by technology
In the production inspection of a large number of GNSS receiver built-in radio stations, the heavy workload will undoubtedly bring troubles to the testers, and the test results are not satisfactory
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[0017] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.
[0018] In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description, so as to illustrate the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.
[0019] The invention provides a test method based on the receiving sensitivity of a UHF radio station built in a GNSS receiver. Firstly, the test device is introduced. The ...
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The invention provides a built-in UHF radio station receiving sensitivity testing method based on a GNSS receiver. The method comprises the steps that the GNSS receiver is selected and set to be a radio base station, differential telegraph text data format parameters are set, the GNSS receiver is connected with a UHF external radio station, base station differential data is transmitted out through the external radio station, a radio station frequency value is set in the external radio station, and the GNSS receiver can output original data of the GNSS receiver by means of the external radio station; an initial attenuation step value is obtained, the step value of a programmable attenuator is set to be 0, one end of the programmable attenuator is connected with the UHF external radio station through a transmission line, the other end of the programmable attenuator is connected with a first spectrometer, and an initial sensitivity d0 is recorded; GNSS receiver data receiving continuity is viewed, a value of the programmable sensitivity d1 is adjusted to meet a receiving sensitivity standard value D=d0+d1, and whether the built-in UHF radio station receiving sensitivity of the GNSS receiver is qualified or not is judged. According to the built-in UHF radio station receiving sensitivity testing method based on a GNSS receiver, qualified build-in radio station products can be detected rapidly and effectively, and the work efficiency is greatly improved.
Description
technical field [0001] The invention relates to the field of measurement, in particular to a method for testing the receiving sensitivity of a UHF radio station built in a GNSS receiver. Background technique [0002] With the development of society, GNSS technology is becoming more and more common. In the surveying and mapping industry, differential data needs to be transmitted between the base station and the mobile station in real time. In order to meet the data transmission between users in a short distance, the data transmission of the built-in UHF radio station in the GNSS receiver is becoming more and more common. [0003] Traditional UHF radio test method: select a UHF (Ultra High Frequency, ultra-high frequency) radio receiver as the base station, send differential data, and select a UHF radio receiver as the mobile station, set the same frequency as the base station, and Receive differential data at a long distance, and judge the receiving performance of the built-...
Claims
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IPC IPC(8): H04B17/29
CPCH04B17/29
Inventor 张丹王清亮李鹏飞宣占丽
Owner SHANGHAI HUACE NAVIGATION TECH