Millimeter wave proximity fuse fixed-height correction method and system based on acceleration sensor

Abstract

The invention discloses a millimeter wave proximity fuse fixed-height correction method and system based on an acceleration sensor. The system is composed of a frequency modulation distance measurement module, an attitude measurement module, a digital signal processing and fixed-height correction module and a detonating device. The frequency modulation distance measurement module and the attitudemeasurement module transmit collected signals to the digital signal processing module, fixed-height correction is carried out, whether an ignition signal is generated or not is judged, and a warhead is detonated after the ignition signal is received by the detonating device. At present, most of conventional ammunition fuses do not provide ammunition body posture information, height determination errors can be caused in the inclination state of an ammunition body, and the millimeter wave proximity fuse height determination method based on the acceleration sensor can obtain angle information ofthe ammunition body during falling according to a posture measurement module, so that the millimeter wave fuse height determination errors are corrected; according to the invention, the explosion height can be accurately controlled, the fuse height determination error caused by the inclination of the ammunition body is accurately corrected, and the damage performance of ammunition is effectively improved.

Description

technical field [0001] The invention relates to the field of ammunition fuzes, in particular to an acceleration sensor-based method for adjusting the height of a millimeter-wave frequency modulation proximity fuze. Background technique [0002] Compared with conventional munitions, precision guided munitions have high precision, but they are expensive and the number of equipment is limited. Considering the current situation of most conventional ammunition fuzes, when the main lobe of the fuze antenna is aimed at the target, the ranging result is the distance between the projectile and the target. However, in reality, during the falling process, the bullet is generally in an inclined landing posture due to the influence of the airflow, causing the direction of the bullet to tilt with the target ground. see figure 1 , at this time, what is obtained by ranging is the distance R between the projectile and the target instead of the real height H of the projectile. Conventional...

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Problems solved by technology

[0003] Traditional inertial navigation technology has high accuracy in attitude measurement technology, but the system is too large and the cost is relatively high; foreign countries are gradually adopting GPS for missile-borne elevation measurement. This method is convenient and direct, but it requires high performance of the receiver. And the output is the altitude, which needs to be converted into the height relative to the ground by relying on geographic information, which will introduce a large error

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