What Tests Are Included in Vehicle Testing?

[LeDavid]

Vehicle testing refers to conducting tests on selected routes. There are two types of vehicle testing: one is CW testing, where a transmitting antenna is set up in a typical area to emit a single-carrier signal, and then vehicle testing is performed on a pre-determined route, using an onboard receiver to capture and record the signal strength at various locations; the other is live network testing, which involves collecting and recording pilot signal power data from various base stations using an onboard test mobile phone within an operational CDMA network. Differences between CW testing and live network testing: CW testing offers convenience in frequency and environmental selection and is an omnidirectional single-carrier test, making it easier to avoid test errors caused by other radio wave interference and varying antenna gains. The accuracy of the collected data is well guaranteed, making it particularly suitable for localized propagation environment predictions during the initial stages of network construction. The propagation model calibration results based on CW testing can provide relatively accurate propagation predictions for network planning. On the other hand, live network testing obtains path loss data from the actual network, with test data accurately reflecting the propagation of broadband signals in the local wireless environment. The propagation model calibration results based on live network test data are especially useful for providing field strength predictions for network optimization. Purpose of vehicle testing: To determine the condition or operational capability of a vehicle, ensure the safety of the driver, guarantee that the vehicle meets required appearance standards and has good safety performance, limit the environmental pollution caused by the vehicle, and ensure its operation under safe, efficient, and low-pollution conditions. For operational vehicles, the goal is to assess their working capacity and technical condition, identify the location and cause of faults or potential issues, and supervise the quality of vehicle maintenance. Establishing a quality monitoring system ensures that vehicles exhibit excellent safety, reliability, power performance, fuel efficiency, emission purification, and noise pollution control, thereby creating greater economic and social benefits.