De-chirping system seeker radar signal processor precision calibration method
A signal processor and radar signal technology, applied in instruments, radio wave measurement systems, etc., can solve problems such as difficult to meet high-precision calibration requirements, test equipment errors, and extensive development costs, and achieve fast and flexible parameter adjustment. Small, difficulty-reducing effect
Active Publication Date: 2017-02-08
XIAN INSTITUE OF SPACE RADIO TECH
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[0007] From the above several precision calibration methods, it can be seen that the traditional precision calibration method needs to consume additional hardware resources, which greatly increases the development cost, and the calibration process has a large workload and introduces additional test equipment errors, making it difficult to meet the high-precision calibration requirements.
The test and accuracy calibration method based on the single-frequency signal source has not been reported in the relevant literature
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[0032] Further illustrate working principle and working process of the present invention below in conjunction with accompanying drawing:
[0033] Such as figure 1 As shown, the process of target ranging and speed measurement by the de-italic seeker signal processor mainly includes intermediate frequency analog-to-digital conversion (ADC), digital quadrature demodulation, clutter suppression, target accumulation detection, and target distance and speed parameter output Multiple modules. The signal processor receives external mode control instructions through the serial port to work in different modes, such as working in different distance segment modes, stationary target mode, moving target mode, etc. Each working mode corresponds to different ADC sampling time, target accumulation detection timing and In the method, the signal processor analyzes the serial port control command to work in different working modes, and the different working modes correspond to different signal p...
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The invention discloses a de-chirping system seeker radar signal processor precision calibration method. The method comprises the steps of 1, connecting a single-frequency signal source to a signal input interface of a signal processor, adjusting the input frequency of the single-frequency signal source, simulating a seeker signal processor control instruction through a computer serial port to adjust the operating mode of the signal processor, wherein the operating mode comprises a moving target mode and a static target mode, and performing a speed measurement functional test and a distance measurement functional test; and 2, continuously adjusting the input frequency of the single-frequency signal source, and performing quick calibration on the speed measurement precision and the distance measurement precision. The method disclosed by the invention realizes simple and quick de-chirping system seeker radar signal processor precision calibration based on the single-frequency signal source, has the characteristics of small error of introduced test equipment and high parameter calibration precision, and meets operating requirements of system testing. The technology is already applied to the ground de-chirping system seeker radar signal processor precision calibration process at present.
Description
technical field [0001] The invention relates to a method for calibrating the precision of a radar signal processor of a de-slanting system seeker, and belongs to the technical field of space microwave radar measurement. Background technique [0002] Seeker radar is a key component of modern precision-guided weapons. It effectively detects target signals in the corresponding airspace based on the prior data such as missile attitude and speed provided by the weapon system, and extracts the relative position and relative motion of the missile and the target in real time. Parameters, independently complete the detection and tracking of static, slow-moving and fast-moving targets on the ground, and small ships on the sea surface, output guidance information, and guide missiles to hit the target. [0003] The seeker millimeter-wave radar signal processor has the functions of target distance measurement and speed measurement for different application scenarios (such as moving targe...
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IPC IPC(8): G01S7/40
CPCG01S7/4004
Inventor 贺亚鹏谭小敏党红杏田栋轩吴疆孙宝华任泓璇
Owner XIAN INSTITUE OF SPACE RADIO TECH