A Parallel Testing Method for Multiple RDSS Terminals in a Microwave Anechoic Chamber

Abstract

This invention discloses a parallel testing method for multiple RDSS terminals in a microwave anechoic chamber, belonging to the field of satellite navigation user equipment testing technology. The invention establishes a test platform using test control and evaluation equipment, a navigation signal simulator, a multi-user arrival signal receiver, and a microwave anechoic chamber. By transmitting arrival signals with differentiated messages and at different arrival times, it addresses the limitation of traditional RDSS terminal test platforms that can only test one RDSS terminal at a time in a microwave anechoic chamber. This method enables parallel testing of multiple RDSS terminals, improving testing efficiency and demonstrating practicality.

Description

Technical Field

[0001] This invention relates to the field of satellite navigation user equipment testing technology, and in particular to a parallel testing method for multiple RDSS terminals in a microwave anechoic chamber. Background Technology

[0002] The RDSS terminal testing platform is primarily used for testing and evaluating the functionality and performance of BeiDou RDSS terminals under laboratory conditions. Currently, RDSS terminal testing is generally conducted in an anechoic chamber. The testing platform typically includes test control and evaluation equipment, a navigation signal simulator, a single-user arrival signal receiver, and the anechoic chamber itself. However, in actual testing, because only one set of laboratory test card serial numbers is available for each RDSS terminal, only one RDSS terminal can be tested simultaneously in the same anechoic chamber. Furthermore, the numerous RDSS terminal test items and the lengthy time required to complete performance testing of all functions for a single RDSS terminal result in low testing efficiency, failing to meet the testing requirements of RDSS terminal manufacturers during mass production. Summary of the Invention

[0003] In view of this, the present invention proposes a parallel testing method for multiple RDSS terminals in a microwave anechoic chamber. To address the shortcomings of traditional RDSS terminal testing platforms that can only test one RDSS terminal at a time in a microwave anechoic chamber, a multi-RDSS terminal testing platform based on differentiated messages and different arrival times is designed, which can realize the parallel testing of multiple RDSS terminals in one microwave anechoic chamber, thus greatly improving the testing efficiency of RDSS terminals.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A parallel testing method for multiple RDSS terminals in a microwave anechoic chamber includes the following steps:

[0006] Step 1: Construct a multi-RDSS terminal test platform, including: test control and evaluation equipment, navigation signal simulator, multi-user inbound signal receiver and microwave anechoic chamber; the microwave anechoic chamber is equipped with a test antenna and multiple test turntables;

[0007] Step 2: Install the RDSS terminal under test on the test turntable, and ensure that the distance between the installation position of each RDSS terminal under test and the projection point of the test antenna is equal.

[0008] Step 3: The test control and evaluation equipment acquires the basic information of each RDSS terminal under test, sets the message to be sent, and performs differentiated configuration of the message to be sent by each RDSS terminal under test.

[0009] Step 4: The test control and evaluation equipment controls the navigation signal simulator to broadcast the RDSS outgoing signal, and the RDSS terminal under test receives the RDSS outgoing signal broadcast through the test antenna.

[0010] Step 5: The RDSS terminal under test receives and locks the RDSS outbound signal, and reports the lock status to the test control and evaluation equipment. The test control and evaluation equipment controls the RDSS terminal under test to transmit the RDSS inbound signal at different inbound times. The message in the RDSS inbound signal is a pre-configured differentiated message.

[0011] Step 6: The multi-user inbound signal receiver receives the RDSS inbound signal, demodulates it, and reports it to the test control and evaluation equipment. The test control and evaluation equipment performs parallel test and evaluation on the RDSS terminal under test.

[0012] Furthermore, the test control and evaluation equipment is connected to the RDSS terminal under test via a serial cable.

[0013] Furthermore, the transmission interval between two RDSS inbound signals is not less than the time occupied by one RDSS outbound signal subframe.

[0014] Further, in step 6, the specific method by which the test control and evaluation equipment performs parallel testing and evaluation on the RDSS terminal under test is as follows: the test control and evaluation equipment matches the received differentiated message with the differentiated message set in step 3. After the differentiated message is successfully matched, the message to be sent is identified. If the differentiated message is successfully matched and the message in the RDSS inbound signal is consistent with the message to be sent set in step 3, then the RDSS terminal under test corresponding to the differentiated message passes the test; if the differentiated message is successfully matched, but the message in the RDSS inbound signal is inconsistent with the message to be sent set in step 3, then the RDSS terminal under test corresponding to the differentiated message fails the test; if the differentiated message cannot be matched, then all RDSS terminals under test except those that are successfully matched fail the test.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This invention proposes a control method that uses differentiated messages and different arrival times to achieve parallel testing of multiple RDSS terminals in a microwave anechoic chamber, which greatly improves the testing efficiency of RDSS terminals.

[0017] 2. In this invention, differentiated messages can be used to match the test evaluation results with the RDSS terminal device under test, making the test evaluation results clear and understandable. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the test platform composition for a parallel testing method of multiple RDSS terminals in a microwave anechoic chamber according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of a multi-user inbound signal receiver. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments and accompanying drawings:

[0021] A parallel testing method for multiple RDSS terminals in a microwave anechoic chamber includes the following steps:

[0022] Step 1: Construct a multi-RDSS terminal test platform, including: test control and evaluation equipment, a navigation signal simulator, a multi-user inbound signal receiver, and a microwave anechoic chamber; the microwave anechoic chamber contains one test antenna and multiple test turntables; wherein:

[0023] Test control and evaluation equipment: mainly includes a test control and evaluation computer, supporting network data exchange equipment, and test control and evaluation software deployed on the computer, used to control the navigation signal simulator, multi-user inbound signal receiver, and multiple RDSS terminals, as well as to evaluate the test results of the functions and performance of multiple RDSS terminals under test;

[0024] Navigation signal simulator: used to simulate the satellite navigation signals received by the navigation terminal in actual sky-alignment situations, including the setting of the RDSS outgoing signal frequency;

[0025] Multi-user inbound signal receiver: used to downconvert, acquire and multiply, receive and process, and process data of inbound signals transmitted by multiple RDSS terminals under test in a microwave anechoic chamber. Finally, the acquired messages and observations of the inbound signals from multiple RDSS terminals under test are sent to the test control and evaluation equipment for processing.

[0026] Microwave anechoic chamber: The microwave anechoic chamber provides a clean electromagnetic space for the RDSS terminal under test. The test antenna installed inside is used for transmitting outgoing signals and receiving incoming signals. Multiple test turntables are installed around the bottom projection point of the test antenna. The number of test turntables in the microwave anechoic chamber can be adjusted according to the size of the microwave anechoic chamber.

[0027] Step 2: Install the RDSS terminal under test on the test turntable, and ensure that the distance between the installation position of each RDSS terminal under test and the projection point of the test antenna is equal.

[0028] Step 3: The test control and evaluation equipment acquires the basic information of each RDSS terminal under test, sets the message to be sent, and performs differentiated configuration of the message to be sent by each RDSS terminal under test.

[0029] Specifically, the test control and evaluation equipment acquires the device serial number of each RDSS terminal under test. The message field generated by the terminal installed at turntable 1 contains "turntable one", the message field generated by the terminal installed at turntable 2 contains "turntable two", and so on.

[0030] Step 4: The test control and evaluation equipment controls the navigation signal simulator to broadcast the RDSS outgoing signal, and the RDSS terminal under test receives the RDSS outgoing signal broadcast through the test antenna.

[0031] Step 5: The RDSS terminal under test receives and locks the RDSS outbound signal, and reports the lock status to the test control and evaluation equipment. The test control and evaluation equipment controls the RDSS terminal under test to transmit the RDSS inbound signal at different inbound times. The message in the RDSS inbound signal is a pre-configured differentiated message.

[0032] Step 6: The multi-user inbound signal receiver receives the RDSS inbound signal, demodulates it, and reports it to the test control and evaluation equipment. The test control and evaluation equipment performs parallel test and evaluation on the RDSS terminal under test.

[0033] Furthermore, the test control and evaluation equipment is connected to the RDSS terminal under test via a serial port.

[0034] Furthermore, the transmission interval between two RDSS inbound signals is not less than the time occupied by one RDSS outbound signal subframe.

[0035] Further, in step 6, the specific method by which the test control and evaluation equipment performs parallel testing and evaluation on the RDSS terminal under test is as follows: The test control and evaluation equipment matches the received differentiated messages with the differentiated messages set in step 3. If the RDSS inbound signal contains "turntable one", it is the RDSS terminal under test on turntable 1. Then, it identifies the message to be sent. If the message in the RDSS inbound signal is consistent with the message to be sent set in step 3, the RDSS terminal under test on turntable 1 passes the test. If the message in the RDSS inbound signal is inconsistent with the message to be sent set in step 3, the RDSS terminal under test on turntable 1 fails the test...

[0036] If the differential messages contained in the RDSS inbound signal cannot match any of the differential messages set in step 3, then all RDSS terminals under test will fail the test except for those that are successfully matched.

[0037] In summary, this invention enables the simultaneous parallel testing of multiple RDSS terminals within a microwave anechoic chamber, significantly improving the testing efficiency of RDSS terminals; and the test evaluation results are matched one-to-one with the tested RDSS terminal devices, making the test evaluation results clear and understandable.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the present invention as defined in the appended claims should be included within the protection scope of the present invention.

Claims

1. A parallel testing method for multiple RDSS terminals in a microwave anechoic chamber, characterized in that, Includes the following steps: Step 1: Construct a multi-RDSS terminal test platform, including: test control and evaluation equipment, navigation signal simulator, multi-user inbound signal receiver and microwave anechoic chamber; the microwave anechoic chamber is equipped with a test antenna and multiple test turntables; Step 2: Install the RDSS terminal under test on the test turntable, and ensure that the distance between the installation position of each RDSS terminal under test and the projection point of the test antenna is equal. Step 3: The test control and evaluation equipment acquires the basic information of each RDSS terminal under test, sets the message to be sent, and performs differentiated configuration of the message to be sent by each RDSS terminal under test. Step 4: The test control and evaluation equipment controls the navigation signal simulator to broadcast the RDSS outgoing signal, and the RDSS terminal under test receives the RDSS outgoing signal broadcast through the test antenna. Step 5: The RDSS terminal under test receives and locks the RDSS outbound signal, and reports the lock status to the test control and evaluation equipment. The test control and evaluation equipment controls the RDSS terminal under test to transmit the RDSS inbound signal at different inbound times. The message in the RDSS inbound signal is a pre-configured differentiated message. The transmission interval between two RDSS inbound signals is not less than the time occupied by one RDSS outbound signal subframe. Step 6: The multi-user inbound signal receiver receives the RDSS inbound signal, demodulates it, and reports it to the test control and evaluation equipment. The test control and evaluation equipment performs parallel testing and evaluation on the RDSS terminal under test. Specifically: The test control and evaluation equipment matches the received differentiated messages with the differentiated messages set in step 3. After a successful match, it identifies the message to be sent. If the differentiated messages match successfully and the message in the RDSS inbound signal is consistent with the message to be sent set in step 3, the RDSS terminal under test corresponding to the differentiated message passes the test. If the differentiated messages match successfully, but the message in the RDSS inbound signal is inconsistent with the message to be sent set in step 3, the RDSS terminal under test corresponding to the differentiated message fails the test. If the differentiated messages cannot be matched, all RDSS terminals under test except those that match successfully fail the test.

2. The parallel testing method for multiple RDSS terminals in a microwave anechoic chamber according to claim 1, characterized in that, The test control and evaluation equipment is connected to the RDSS terminal under test via a serial cable.

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