System and method for measuring flight test data delay
A technology of flight test and system under test, which is applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problem of error exceeding, and achieve the effect of high delay detection accuracy and convenient delay detection
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] A system for measuring flight test data delay in this embodiment, such as figure 1 and figure 2 As shown, it includes a standard signal source 1 and a signal receiving end, and also includes a system control module, which uniformly provides timing to the standard signal source and the signal receiving end, so that the time in the system is aligned; the standard signal source is used to receive the clock Signals and send data signals with special marks to the system under test, and can package the output special mark signal information and special mark data sending time information into excitation signal packets; the signal receiving end is used to receive clock signals and pass through The data signal with a special mark output by the test system, and can package the output special mark signal and the detection receiving time into a detection signal packet; the system control module is used to receive the excitation signal packet and the detection signal packet.
[00...
Embodiment 2
[0040] This embodiment is further optimized on the basis of embodiment 1, such as image 3 As shown, the system control module receives a high-precision clock signal through the GPS / Beidou receiving module, and generates a timing data packet through the IEEE1588 clock timing module, and sends the timing data packet to the standard signal source and the signal receiving end through the network communication function module. Time service is performed; the system control module receives task preparation information through the network communication function module; the network communication function module receives the excitation signal and the detection signal and sends them to the operation module, and the operation module performs delay calculation.
[0041] The GPS / Beidou receiving module receives the external high-precision clock signal through the GPS / Beidou external antenna, and encapsulates the received high-precision clock signal into a timing data packet through the IEEE...
Embodiment 3
[0046] This embodiment is further optimized on the basis of above-mentioned embodiment 1 or 2, such as Figure 4 As shown, the standard signal source sends instructions and sets special marks to the message generation module through the signal source task module, and the message generation module generates an avionics message flow with a special mark after receiving the instruction, and sends the avionics message flow to The signal source data encapsulation module; the standard signal source receives the timing data packet from the system control module through the signal source timing module and performs timing to the avionics message flow; The system sends the avionics message stream; the signal source data encapsulation module is also used to encapsulate and form an excitation signal package.
[0047] The message generation module, signal source data encapsulation module, and signal source timing module in the standard signal source constitute the FPGA circuit. The standard...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More