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A radar device, output adjustment technology, applied in the direction of measuring devices, radio wave measuring systems, instruments, etc., can solve time-consuming problems and achieve the effect of simplifying the composition
Active Publication Date: 2017-08-01
DENSO CORP
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Problems solved by technology
In other words, every time the adjustment parameter is changed, communication with the PC is required every time, so there is a problem that it takes time to adjust the emission level
Method used
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no. 1 approach
[0020] [constitute]
[0021] Such as figure 1 As shown, the radar output adjustment system 1 according to the present embodiment includes a radar device 2 to be adjusted and an external device system 4 prepared separately from the radar device 2 .
[0023] The external device system 4 according to the present embodiment includes a receiving antenna 41 , a power meter 42 , a PC (personal computer) 43 , and a reflector 44 .
[0024] The receiving antenna 41 is disposed at a position facing the radar device 2 , and receives radar waves output from the radar device 2 . It should be noted that the distance between the receiving antenna 41 and the radar device 2 is preferably as close as possible, for example, set to 1 m or less.
[0025] The power meter 42 measures the reception level (received power here) of the radar wave received by the reception antenna 41 according to the reception signal from the reception antenna 41 . Thereby, the emissi...
no. 2 approach
[0072] In the second embodiment, since the basic configuration is the same as that of the first embodiment, the description of the common configuration will be omitted, and the description will focus on the differences.
[0073] In the first embodiment described above, the reflector 44 was used as a configuration for delaying and returning the radar wave. In contrast, in the second embodiment, as Figure 5 As shown, the delay line 45 is used differently from the first embodiment.
[0074] [External device system]
[0075] The external device system 4 a constituting the radar output adjustment system 1 a of the present embodiment includes a receiving antenna 41 , a power meter 42 , a PC 43 , a delay line 45 , and a transmitting antenna 46 . In other words, compared with the external device system 4 of the first embodiment, the reflector 44 is omitted, and the delay line 45 and the transmission antenna 46 are provided instead.
[0076] The delay line 45 delays the signal from...
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Abstract
This radar device (2) sets an adjustment parameter to an arbitrary value, transmits radarwaves, and acquires an initial transmission level which is the result of measuring the radarwave transmission level from outside the radar device. In association with this, delayed waves of the radar waves are received from outside the radar device, and an initial reception level which is the result of measuring the delayed wave reception level is acquired (30: S120-S150). A target reception level is then established in accordance with a pre-established target transmission level, and the acquired initial transmission level and initial reception level (30: S160). Updating of the adjustment parameter and measurement of the reception level are then repeated until the reception level matches the target reception level (30: S170).
Description
technical field [0001] The present disclosure relates to techniques for adjusting the transmission power of a radar device. Background technique [0002] Conventionally, the following method is known as one of methods for adjusting the emission level of a radar device using an inspection line before shipment or the like. [0003] In the conventional method, first, a radar wave emitted from the radar device is received by a receiving antenna arranged in the vicinity of the radar device, and the reception level thereof is measured with a power meter or the like. The measurement results of the power meter are imported into a personal computer (PC), and supplied to the radar device via the PC. As a result, in the radar device, adjustment parameters for changing the output of radar waves are changed so that the measurement result of the emission level obtained from the PC coincides with a preset target emission level (see Patent Document 1). [0004] Patent Document 1: Japanese...
Claims
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Application Information
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