Livshits M S
Biofizika. 1977 Sep-Oct;22(5):910-4.
Potential accuracy in measuring the course to a target is calculated. This accuracy is physically achievable it the hypothesis that an accurate measurement of angular coordinates of the target of bat's echolocator is realized by the method similar to that of equally signaling zone in radiolocation is true. Possible application of such a method is based on the "pulsation" of direction diagram in the course of radiation of the probing impulse. In this case crossing of partial diagrams of radiation corresponding to high- and low-frequancy regions of the impulse form the equally signaling zine. If the target is in this direction the amplitudes of autocorrelation functions formed by corresponding regions of reflected and probing impulses will be equal. The minimal error of the method is limited by the optimum duration of each of the compared correlation functions, which forms the basis for derivation of the formula evaluating this error. Numerical calculation of the accuracy of measurements of the angle achievable for the echolocator of Myotis blythi is performed by this formula proceeding from average experimental values of the echolocator characteristics. The model under consideration is shown to agree with a number of experimental data.
计算了测量目标方向的潜在精度。如果通过类似于无线电定位中同等信号区的方法实现对蝙蝠回声定位器目标角坐标的精确测量这一假设成立，那么这种精度在物理上是可以达到的。这种方法的可能应用基于探测脉冲辐射过程中方向图的“脉动”。在这种情况下，对应于脉冲高频和低频区域的部分辐射图的交叉形成了同等信号区。如果目标在这个方向上，由反射脉冲和探测脉冲的相应区域形成的自相关函数的幅度将相等。该方法的最小误差受每个比较相关函数的最佳持续时间限制，这构成了推导评估该误差公式的基础。根据回声定位器特性的平均实验值，用该公式对布氏鼠耳蝠回声定位器可实现的角度测量精度进行了数值计算。结果表明，所考虑的模型与许多实验数据相符。
