算法：获取雷达的目标经纬度信息

    @Testpublic void test() {// 雷达信息double radarLon = 120.283664;double radarLat = 29.892702;double northAngle = 26.5;// 目标信息float x = -13.7f * 0.1f;float y = 234.7f * 0.1f;float v = -1.3f;calculateTarget(radarLon, radarLat, northAngle, x, y, v);}public RadarTarget calculateTarget(double radarLon, double radarLat, double northAngle,double x, double y, double v) {// 1. 计算距离double distance = Math.sqrt(x * x + y * y);// 2. 计算方位角（弧度）double theta = Math.atan2(y, x);double bearing = Math.toRadians(26.5) + theta;// 3. 计算运动方向（相对于正北顺时针的角度）double direction = Math.toDegrees(bearing);if (direction < 0) {direction += 360;}// 4. 计算目标经纬度double northAngleRad = Math.toRadians(northAngle);double deltaX = x * Math.cos(northAngleRad) - y * Math.sin(northAngleRad);double deltaY = x * Math.sin(northAngleRad) + y * Math.cos(northAngleRad);System.out.println(deltaY);// 转换为经纬度 - 1度纬度对应的米数double deltaLon = deltaX / (111320 * Math.cos(Math.toRadians(radarLat)));double deltaLat = deltaY / 111320;double targetLon = radarLon + deltaLon;double targetLat = radarLat + deltaLat;return new RadarTarget(distance, targetLon, targetLat, direction, v);}