CAJ | 학술논문

接收信号强度(RSSI)易受环境干扰而出现多值，使得“RSSI-距离”的一一映射关系被破坏，导致单纯采用RSSI值和距离映射进行测距时存在较大误差。针对该问题，提出基于距离区间概率加权的测距方法，建立RSSI和距离区间之间的映射关系，并求出RSSI值出现在该区间中每个距离点下的概率，再以概率为权值对区间中的所有距离进行加权求和，将得到的结果作为该RSSI值对应的距离。仿真结果表明，和曲线拟合法及区间测距法相比，该方法在测距精度上均有不同程度的提高。
접수신호강도(RSSI)역수배경간우이출현다치，사득“RSSI-거리”적일일영사관계피파배，도치단순채용RSSI치화거리영사진행측거시존재교대오차。침대해문제，제출기우거리구간개솔가권적측거방법，건립RSSI화거리구간지간적영사관계，병구출RSSI치출현재해구간중매개거리점하적개솔，재이개솔위권치대구간중적소유거리진행가권구화，장득도적결과작위해RSSI치대응적거리。방진결과표명，화곡선의합법급구간측거법상비，해방법재측거정도상균유불동정도적제고。
Vulnerability to environmental interference makes RSSI multiple figures, which leads to the destruction of the one-to-one map between the“RSSI-Distance”, and a larger error in the distance mapping which solely uses the point-to-point mapping between the RSSI and the distance. To solve this problem, a ranging method based on weighted distance interval probability is proposed:establishing the mapping relation between RSSI and distance interval, calculating the probability of the occurrence of RSSI in each point of the interval distance, and then weighted summing with probabilities of all intervals. The results is then used as the distance corresponding to the RSSI. The simulation results show that this method provides a higher ranging precision in different degrees compared with the method of curve fitting and interval ranging method.