【摘要】 磁探拖体可用于水中、空中拖曳式磁场测量,尽管拖体中没有动力系统,但是仍然有显著的磁场干扰存在,因此也需要进行磁干扰补偿,但拖体自身不具有机动能力,无法通过类似航空平台的机动校准方法进行磁补偿参数的求解。文中针对这一问题提出了一种适用于磁探拖体的磁补偿参数地面校准方法,设计了地面磁补偿校准装置,对实施场地的磁场环境进行了一定约束,在与航空磁补偿参数校准方案等效性分析的基础上,设计了适用于磁探拖体的地面校准方法,并开展了实际环境下的地面校准试验和动态噪声试验验证。试验结果表明,该方法针对拖曳式磁测装置的磁补偿参数校准具有良好的效果,磁补偿参数质量可以和航空平台磁补偿参数相当,试验中磁补偿校准改善比大于16。更多还原

【Abstract】 Magnetometer towfish can be utilized for underwater and aerial towed magnetic field measurements. Although they lack propulsion systems, significant magnetic interference persists, necessitating magnetic interference compensation.However, as towfish possess no maneuverability, they cannot employ calibration methods akin to those of airborne platforms for determining magnetic compensation parameters. This article proposed a ground calibration method of magnetic compensation parameters for magnetometer towfish and designed a ground magnetic interference calibration device to impose certain constraints on the magnetic field environment. Based on the equivalence analysis with the aeromagnetic compensation parameter calibration scheme, a ground calibration method tailored for magnetometer towfish was designed and subsequently subjected to ground calibration experiments and dynamic noise validation in actual environments. Experimental results reveal that the method possesses remarkable efficacy for calibrating magnetic compensation parameters of towfish by using towed magnetic field measurement devices, yielding a quality akin to that of aircraft platforms. The improvement ratio for magnetic compensation calibration exceeds 16.更多还原